http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMapper.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMapper.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMapper.java
index fec276c..7e037c0 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMapper.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMapper.java
@@ -19,26 +19,27 @@ package org.apache.zeppelin.realm.jwt;
 
 public interface PrincipalMapper {
   /**
-   * Load the internal principal mapping table from the provided
-   * string value which conforms to the following semicolon delimited format:
-   * actual[,another-actual]=mapped;...
+   * Load the internal principal mapping table from the provided string value 
which conforms to the
+   * following semicolon delimited format: actual[,another-actual]=mapped;...
+   *
    * @param principalMapping
    */
   void loadMappingTable(String principalMapping, String groupMapping)
-          throws PrincipalMappingException;
+      throws PrincipalMappingException;
 
   /**
-   * Acquire a mapped principal name from the mapping table
-   * as appropriate. Otherwise, the provided principalName
-   * will be used.
+   * Acquire a mapped principal name from the mapping table as appropriate. 
Otherwise, the provided
+   * principalName will be used.
+   *
    * @param principalName
    * @return principal name to be used in the assertion
    */
   String mapUserPrincipal(String principalName);
 
   /**
-   * Acquire array of group principal names from the mapping table
-   * as appropriate. Otherwise, return null.
+   * Acquire array of group principal names from the mapping table as 
appropriate. Otherwise, return
+   * null.
+   *
    * @param principalName
    * @return group principal names to be used in the assertion
    */

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMappingException.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMappingException.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMappingException.java
index 50e5036..21d5fab 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMappingException.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/PrincipalMappingException.java
@@ -1,25 +1,20 @@
 /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
+ * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license
+ * agreements. See the NOTICE file distributed with this work for additional 
information regarding
+ * copyright ownership. The ASF licenses this file to you under the Apache 
License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the 
License. You may obtain a
+ * copy of the License at
  *
- * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>http://www.apache.org/licenses/LICENSE-2.0
  *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
+ * <p>Unless required by applicable law or agreed to in writing, software 
distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing 
permissions and
  * limitations under the License.
  */
 package org.apache.zeppelin.realm.jwt;
 
-/***
- * {@link System}.
- */
+/** * {@link System}. */
 public class PrincipalMappingException extends Exception {
   public PrincipalMappingException(String message) {
     super(message);

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/SimplePrincipalMapper.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/SimplePrincipalMapper.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/SimplePrincipalMapper.java
index b194810..c1fbfb4 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/SimplePrincipalMapper.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/realm/jwt/SimplePrincipalMapper.java
@@ -1,18 +1,15 @@
 /**
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
+ * Licensed to the Apache Software Foundation (ASF) under one or more 
contributor license
+ * agreements. See the NOTICE file distributed with this work for additional 
information regarding
+ * copyright ownership. The ASF licenses this file to you under the Apache 
License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the 
License. You may obtain a
+ * copy of the License at
  *
- * http://www.apache.org/licenses/LICENSE-2.0
+ * <p>http://www.apache.org/licenses/LICENSE-2.0
  *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
+ * <p>Unless required by applicable law or agreed to in writing, software 
distributed under the
+ * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR 
CONDITIONS OF ANY KIND, either
+ * express or implied. See the License for the specific language governing 
permissions and
  * limitations under the License.
  */
 package org.apache.zeppelin.realm.jwt;
@@ -21,17 +18,13 @@ import java.util.Arrays;
 import java.util.HashMap;
 import java.util.StringTokenizer;
 
-
-/***
- * 
- */
+/** * */
 public class SimplePrincipalMapper implements PrincipalMapper {
 
   public HashMap<String, String[]> principalMappings = null;
   public HashMap<String, String[]> groupMappings = null;
 
-  public SimplePrincipalMapper() {
-  }
+  public SimplePrincipalMapper() {}
 
   /* (non-Javadoc)
    * @see 
org.apache.hadoop.gateway.filter.PrincipalMapper#loadMappingTable(java.lang.String)
@@ -45,8 +38,7 @@ public class SimplePrincipalMapper implements PrincipalMapper 
{
     }
   }
 
-  private HashMap<String, String[]> parseMapping(String mappings)
-      throws PrincipalMappingException {
+  private HashMap<String, String[]> parseMapping(String mappings) throws 
PrincipalMappingException {
     if (mappings == null) {
       return null;
     }
@@ -71,8 +63,10 @@ public class SimplePrincipalMapper implements 
PrincipalMapper {
       // no principal mapping will occur
       table.clear();
       throw new PrincipalMappingException(
-          "Unable to load mappings from provided string: " + mappings
-              + " - no principal mapping will be provided.", e);
+          "Unable to load mappings from provided string: "
+              + mappings
+              + " - no principal mapping will be provided.",
+          e);
     }
   }
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/AbstractRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/AbstractRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/AbstractRestApi.java
index f4406a2..aeede66 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/AbstractRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/AbstractRestApi.java
@@ -18,15 +18,14 @@
 package org.apache.zeppelin.rest;
 
 import com.google.common.collect.Sets;
+import java.io.IOException;
+import java.util.Set;
+import javax.ws.rs.WebApplicationException;
 import org.apache.zeppelin.service.ServiceContext;
 import org.apache.zeppelin.service.SimpleServiceCallback;
 import org.apache.zeppelin.user.AuthenticationInfo;
 import org.apache.zeppelin.utils.SecurityUtils;
 
-import javax.ws.rs.WebApplicationException;
-import java.io.IOException;
-import java.util.Set;
-
 public class AbstractRestApi {
 
   protected ServiceContext getServiceContext() {

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/HeliumRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/HeliumRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/HeliumRestApi.java
index 1c04500..4e5f180 100644
--- a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/HeliumRestApi.java
+++ b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/HeliumRestApi.java
@@ -19,18 +19,11 @@ package org.apache.zeppelin.rest;
 import com.google.gson.Gson;
 import com.google.gson.JsonParseException;
 import com.google.gson.reflect.TypeToken;
-
-import javax.inject.Inject;
-import org.apache.commons.io.FileUtils;
-import org.apache.commons.lang3.StringUtils;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.File;
 import java.io.IOException;
 import java.util.List;
 import java.util.Map;
-
+import javax.inject.Inject;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
 import javax.ws.rs.Path;
@@ -38,7 +31,8 @@ import javax.ws.rs.PathParam;
 import javax.ws.rs.Produces;
 import javax.ws.rs.QueryParam;
 import javax.ws.rs.core.Response;
-
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.zeppelin.helium.Helium;
 import org.apache.zeppelin.helium.HeliumPackage;
 import org.apache.zeppelin.helium.HeliumPackageSearchResult;
@@ -46,10 +40,10 @@ import org.apache.zeppelin.notebook.Note;
 import org.apache.zeppelin.notebook.Notebook;
 import org.apache.zeppelin.notebook.Paragraph;
 import org.apache.zeppelin.server.JsonResponse;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-/**
- * Helium Rest Api.
- */
+/** Helium Rest Api. */
 @Path("/helium")
 @Produces("application/json")
 public class HeliumRestApi {
@@ -61,13 +55,11 @@ public class HeliumRestApi {
 
   @Inject
   public HeliumRestApi(Helium helium, Notebook notebook) {
-    this.helium  = helium;
+    this.helium = helium;
     this.notebook = notebook;
   }
 
-  /**
-   * Get all packages info.
-   */
+  /** Get all packages info. */
   @GET
   @Path("package")
   public Response getAllPackageInfo() {
@@ -79,9 +71,7 @@ public class HeliumRestApi {
     }
   }
 
-  /**
-   * Get all enabled packages info.
-   */
+  /** Get all enabled packages info. */
   @GET
   @Path("enabledPackage")
   public Response getAllEnabledPackageInfo() {
@@ -93,20 +83,18 @@ public class HeliumRestApi {
     }
   }
 
-  /**
-   * Get single package info.
-   */
+  /** Get single package info. */
   @GET
   @Path("package/{packageName}")
   public Response getSinglePackageInfo(@PathParam("packageName") String 
packageName) {
     if (StringUtils.isEmpty(packageName)) {
-      return new JsonResponse(Response.Status.BAD_REQUEST,
-              "Can't get package info for empty name").build();
+      return new JsonResponse(Response.Status.BAD_REQUEST, "Can't get package 
info for empty name")
+          .build();
     }
 
     try {
-      return new JsonResponse<>(
-          Response.Status.OK, "", 
helium.getSinglePackageInfo(packageName)).build();
+      return new JsonResponse<>(Response.Status.OK, "", 
helium.getSinglePackageInfo(packageName))
+          .build();
     } catch (RuntimeException e) {
       logger.error(e.getMessage(), e);
       return new JsonResponse(Response.Status.INTERNAL_SERVER_ERROR, 
e.getMessage()).build();
@@ -115,8 +103,8 @@ public class HeliumRestApi {
 
   @GET
   @Path("suggest/{noteId}/{paragraphId}")
-  public Response suggest(@PathParam("noteId") String noteId,
-          @PathParam("paragraphId") String paragraphId) {
+  public Response suggest(
+      @PathParam("noteId") String noteId, @PathParam("paragraphId") String 
paragraphId) {
     Note note = notebook.getNote(noteId);
     if (note == null) {
       return new JsonResponse(Response.Status.NOT_FOUND, "Note " + noteId + " 
not found").build();
@@ -133,13 +121,14 @@ public class HeliumRestApi {
       logger.error(e.getMessage(), e);
       return new JsonResponse(Response.Status.INTERNAL_SERVER_ERROR, 
e.getMessage()).build();
     }
-
   }
 
   @POST
   @Path("load/{noteId}/{paragraphId}")
-  public Response load(@PathParam("noteId") String noteId,
-          @PathParam("paragraphId") String paragraphId, String heliumPackage) {
+  public Response load(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      String heliumPackage) {
     Note note = notebook.getNote(noteId);
     if (note == null) {
       return new JsonResponse(Response.Status.NOT_FOUND, "Note " + noteId + " 
not found").build();
@@ -152,8 +141,9 @@ public class HeliumRestApi {
     }
     HeliumPackage pkg = HeliumPackage.fromJson(heliumPackage);
     try {
-      return new JsonResponse<>(Response.Status.OK, "",
-              helium.getApplicationFactory().loadAndRun(pkg, 
paragraph)).build();
+      return new JsonResponse<>(
+              Response.Status.OK, "", 
helium.getApplicationFactory().loadAndRun(pkg, paragraph))
+          .build();
     } catch (RuntimeException e) {
       logger.error(e.getMessage(), e);
       return new JsonResponse(Response.Status.INTERNAL_SERVER_ERROR, 
e.getMessage()).build();
@@ -163,12 +153,12 @@ public class HeliumRestApi {
   @GET
   @Path("bundle/load/{packageName}")
   @Produces("text/javascript")
-  public Response bundleLoad(@QueryParam("refresh") String refresh,
-          @PathParam("packageName") String packageName) {
+  public Response bundleLoad(
+      @QueryParam("refresh") String refresh, @PathParam("packageName") String 
packageName) {
     if (StringUtils.isEmpty(packageName)) {
       return new JsonResponse(
-          Response.Status.BAD_REQUEST,
-          "Can't get bundle due to empty package name").build();
+              Response.Status.BAD_REQUEST, "Can't get bundle due to empty 
package name")
+          .build();
     }
 
     HeliumPackageSearchResult psr = null;
@@ -243,12 +233,12 @@ public class HeliumRestApi {
     }
 
     try {
-      Map<String, Map<String, Object>> config =
-          helium.getSpellConfig(packageName);
+      Map<String, Map<String, Object>> config = 
helium.getSpellConfig(packageName);
 
       if (config == null) {
-        return new JsonResponse(Response.Status.BAD_REQUEST,
-            "Failed to find enabled package for " + packageName).build();
+        return new JsonResponse(
+                Response.Status.BAD_REQUEST, "Failed to find enabled package 
for " + packageName)
+            .build();
       }
 
       return new JsonResponse<>(Response.Status.OK, config).build();
@@ -272,21 +262,20 @@ public class HeliumRestApi {
 
   @GET
   @Path("config/{packageName}/{artifact}")
-  public Response getPackageConfig(@PathParam("packageName") String 
packageName,
-          @PathParam("artifact") String artifact) {
+  public Response getPackageConfig(
+      @PathParam("packageName") String packageName, @PathParam("artifact") 
String artifact) {
     if (StringUtils.isEmpty(packageName) || StringUtils.isEmpty(artifact)) {
-      return new JsonResponse(Response.Status.BAD_REQUEST,
-          "package name or artifact is empty"
-      ).build();
+      return new JsonResponse(Response.Status.BAD_REQUEST, "package name or 
artifact is empty")
+          .build();
     }
 
     try {
-      Map<String, Map<String, Object>> config =
-          helium.getPackageConfig(packageName, artifact);
+      Map<String, Map<String, Object>> config = 
helium.getPackageConfig(packageName, artifact);
 
       if (config == null) {
-        return new JsonResponse(Response.Status.BAD_REQUEST,
-            "Failed to find package for " + artifact).build();
+        return new JsonResponse(
+                Response.Status.BAD_REQUEST, "Failed to find package for " + 
artifact)
+            .build();
       }
 
       return new JsonResponse<>(Response.Status.OK, config).build();
@@ -298,26 +287,25 @@ public class HeliumRestApi {
 
   @POST
   @Path("config/{packageName}/{artifact}")
-  public Response updatePackageConfig(@PathParam("packageName") String 
packageName,
-          @PathParam("artifact") String artifact, String rawConfig) {
+  public Response updatePackageConfig(
+      @PathParam("packageName") String packageName,
+      @PathParam("artifact") String artifact,
+      String rawConfig) {
     if (StringUtils.isEmpty(packageName) || StringUtils.isEmpty(artifact)) {
-      return new JsonResponse(Response.Status.BAD_REQUEST,
-          "package name or artifact is empty"
-      ).build();
+      return new JsonResponse(Response.Status.BAD_REQUEST, "package name or 
artifact is empty")
+          .build();
     }
 
     try {
-      Map<String, Object> packageConfig = gson.fromJson(
-          rawConfig, new TypeToken<Map<String, Object>>(){}.getType());
+      Map<String, Object> packageConfig =
+          gson.fromJson(rawConfig, new TypeToken<Map<String, Object>>() 
{}.getType());
       helium.updatePackageConfig(artifact, packageConfig);
       return new JsonResponse<>(Response.Status.OK, packageConfig).build();
     } catch (JsonParseException e) {
       logger.error(e.getMessage(), e);
-      return new JsonResponse(Response.Status.BAD_REQUEST,
-          e.getMessage()).build();
+      return new JsonResponse(Response.Status.BAD_REQUEST, 
e.getMessage()).build();
     } catch (IOException | RuntimeException e) {
-      return new JsonResponse(Response.Status.INTERNAL_SERVER_ERROR,
-          e.getMessage()).build();
+      return new JsonResponse(Response.Status.INTERNAL_SERVER_ERROR, 
e.getMessage()).build();
     }
   }
 
@@ -336,8 +324,8 @@ public class HeliumRestApi {
   @POST
   @Path("order/visualization")
   public Response setVisualizationPackageOrder(String orderedPackageNameList) {
-    List<String> orderedList = gson.fromJson(
-        orderedPackageNameList, new TypeToken<List<String>>(){}.getType());
+    List<String> orderedList =
+        gson.fromJson(orderedPackageNameList, new TypeToken<List<String>>() 
{}.getType());
     try {
       helium.setVisualizationPackageOrder(orderedList);
       return new JsonResponse(Response.Status.OK).build();

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/InterpreterRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/InterpreterRestApi.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/InterpreterRestApi.java
index abf7de8..afe3b4f 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/InterpreterRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/InterpreterRestApi.java
@@ -18,7 +18,20 @@
 package org.apache.zeppelin.rest;
 
 import com.google.common.collect.Maps;
+import java.io.IOException;
+import java.util.List;
+import java.util.Map;
 import javax.inject.Inject;
+import javax.validation.constraints.NotNull;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
 import org.apache.commons.lang.exception.ExceptionUtils;
 import org.apache.zeppelin.annotation.ZeppelinApi;
 import org.apache.zeppelin.dep.Repository;
@@ -42,23 +55,7 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.sonatype.aether.repository.RemoteRepository;
 
-import javax.validation.constraints.NotNull;
-import javax.ws.rs.DELETE;
-import javax.ws.rs.GET;
-import javax.ws.rs.POST;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
-import java.io.IOException;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Interpreter Rest API.
- */
+/** Interpreter Rest API. */
 @Path("/interpreter")
 @Produces("application/json")
 public class InterpreterRestApi {
@@ -79,9 +76,7 @@ public class InterpreterRestApi {
     this.notebookServer = notebookWsServer;
   }
 
-  /**
-   * List all interpreter settings.
-   */
+  /** List all interpreter settings. */
   @GET
   @Path("setting")
   @ZeppelinApi
@@ -89,9 +84,7 @@ public class InterpreterRestApi {
     return new JsonResponse<>(Status.OK, "", 
interpreterSettingManager.get()).build();
   }
 
-  /**
-   * Get a setting.
-   */
+  /** Get a setting. */
   @GET
   @Path("setting/{settingId}")
   @ZeppelinApi
@@ -105,8 +98,9 @@ public class InterpreterRestApi {
       }
     } catch (NullPointerException e) {
       logger.error("Exception in InterpreterRestApi while creating ", e);
-      return new JsonResponse<>(Status.INTERNAL_SERVER_ERROR, e.getMessage(),
-          ExceptionUtils.getStackTrace(e)).build();
+      return new JsonResponse<>(
+              Status.INTERNAL_SERVER_ERROR, e.getMessage(), 
ExceptionUtils.getStackTrace(e))
+          .build();
     }
   }
 
@@ -120,15 +114,18 @@ public class InterpreterRestApi {
   @ZeppelinApi
   public Response newSettings(String message) {
     try {
-      NewInterpreterSettingRequest request =
-          NewInterpreterSettingRequest.fromJson(message);
+      NewInterpreterSettingRequest request = 
NewInterpreterSettingRequest.fromJson(message);
       if (request == null) {
         return new JsonResponse<>(Status.BAD_REQUEST).build();
       }
 
-      InterpreterSetting interpreterSetting = interpreterSettingManager
-          .createNewSetting(request.getName(), request.getGroup(), 
request.getDependencies(),
-              request.getOption(), request.getProperties());
+      InterpreterSetting interpreterSetting =
+          interpreterSettingManager.createNewSetting(
+              request.getName(),
+              request.getGroup(),
+              request.getDependencies(),
+              request.getOption(),
+              request.getProperties());
       logger.info("new setting created with {}", interpreterSetting.getId());
       return new JsonResponse<>(Status.OK, "", interpreterSetting).build();
     } catch (IOException e) {
@@ -145,19 +142,18 @@ public class InterpreterRestApi {
     logger.info("Update interpreterSetting {}", settingId);
 
     try {
-      UpdateInterpreterSettingRequest request =
-          UpdateInterpreterSettingRequest.fromJson(message);
-      interpreterSettingManager
-          .setPropertyAndRestart(settingId, request.getOption(), 
request.getProperties(),
-              request.getDependencies());
+      UpdateInterpreterSettingRequest request = 
UpdateInterpreterSettingRequest.fromJson(message);
+      interpreterSettingManager.setPropertyAndRestart(
+          settingId, request.getOption(), request.getProperties(), 
request.getDependencies());
     } catch (InterpreterException e) {
       logger.error("Exception in InterpreterRestApi while updateSetting ", e);
       return new JsonResponse<>(Status.NOT_FOUND, e.getMessage(), 
ExceptionUtils.getStackTrace(e))
           .build();
     } catch (IOException e) {
       logger.error("Exception in InterpreterRestApi while updateSetting ", e);
-      return new JsonResponse<>(Status.INTERNAL_SERVER_ERROR, e.getMessage(),
-          ExceptionUtils.getStackTrace(e)).build();
+      return new JsonResponse<>(
+              Status.INTERNAL_SERVER_ERROR, e.getMessage(), 
ExceptionUtils.getStackTrace(e))
+          .build();
     }
     InterpreterSetting setting = interpreterSettingManager.get(settingId);
     if (setting == null) {
@@ -166,9 +162,7 @@ public class InterpreterRestApi {
     return new JsonResponse<>(Status.OK, "", setting).build();
   }
 
-  /**
-   * Remove interpreter setting.
-   */
+  /** Remove interpreter setting. */
   @DELETE
   @Path("setting/{settingId}")
   @ZeppelinApi
@@ -178,9 +172,7 @@ public class InterpreterRestApi {
     return new JsonResponse(Status.OK).build();
   }
 
-  /**
-   * Restart interpreter setting.
-   */
+  /** Restart interpreter setting. */
   @PUT
   @Path("setting/restart/{settingId}")
   @ZeppelinApi
@@ -209,9 +201,7 @@ public class InterpreterRestApi {
     return new JsonResponse<>(Status.OK, "", setting).build();
   }
 
-  /**
-   * List all available interpreters by group.
-   */
+  /** List all available interpreters by group. */
   @GET
   @ZeppelinApi
   public Response listInterpreter() {
@@ -219,9 +209,7 @@ public class InterpreterRestApi {
     return new JsonResponse<>(Status.OK, "", m).build();
   }
 
-  /**
-   * List of dependency resolving repositories.
-   */
+  /** List of dependency resolving repositories. */
   @GET
   @Path("repository")
   @ZeppelinApi
@@ -241,13 +229,18 @@ public class InterpreterRestApi {
   public Response addRepository(String message) {
     try {
       Repository request = Repository.fromJson(message);
-      interpreterSettingManager.addRepository(request.getId(), 
request.getUrl(),
-          request.isSnapshot(), request.getAuthentication(), 
request.getProxy());
+      interpreterSettingManager.addRepository(
+          request.getId(),
+          request.getUrl(),
+          request.isSnapshot(),
+          request.getAuthentication(),
+          request.getProxy());
       logger.info("New repository {} added", request.getId());
     } catch (Exception e) {
       logger.error("Exception in InterpreterRestApi while adding repository ", 
e);
-      return new JsonResponse<>(Status.INTERNAL_SERVER_ERROR, e.getMessage(),
-          ExceptionUtils.getStackTrace(e)).build();
+      return new JsonResponse<>(
+              Status.INTERNAL_SERVER_ERROR, e.getMessage(), 
ExceptionUtils.getStackTrace(e))
+          .build();
     }
     return new JsonResponse(Status.OK).build();
   }
@@ -266,15 +259,14 @@ public class InterpreterRestApi {
       interpreterSettingManager.removeRepository(repoId);
     } catch (Exception e) {
       logger.error("Exception in InterpreterRestApi while removing repository 
", e);
-      return new JsonResponse<>(Status.INTERNAL_SERVER_ERROR, e.getMessage(),
-          ExceptionUtils.getStackTrace(e)).build();
+      return new JsonResponse<>(
+              Status.INTERNAL_SERVER_ERROR, e.getMessage(), 
ExceptionUtils.getStackTrace(e))
+          .build();
     }
     return new JsonResponse(Status.OK).build();
   }
 
-  /**
-   * Get available types for property
-   */
+  /** Get available types for property */
   @GET
   @Path("property/types")
   public Response listInterpreterPropertyTypes() {

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/LoginRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/LoginRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/LoginRestApi.java
index f13c222..74abe56 100644
--- a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/LoginRestApi.java
+++ b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/LoginRestApi.java
@@ -17,27 +17,13 @@
 package org.apache.zeppelin.rest;
 
 import com.google.gson.Gson;
-import javax.inject.Inject;
-import org.apache.shiro.authc.AuthenticationException;
-import org.apache.shiro.authc.AuthenticationToken;
-import org.apache.shiro.authc.IncorrectCredentialsException;
-import org.apache.shiro.authc.LockedAccountException;
-import org.apache.shiro.authc.UnknownAccountException;
-import org.apache.shiro.authc.UsernamePasswordToken;
-import org.apache.shiro.realm.Realm;
-import org.apache.shiro.subject.Subject;
-import org.apache.zeppelin.conf.ZeppelinConfiguration;
-import org.apache.zeppelin.notebook.Notebook;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.text.ParseException;
 import java.util.Collection;
 import java.util.HashMap;
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
-
+import javax.inject.Inject;
 import javax.ws.rs.FormParam;
 import javax.ws.rs.GET;
 import javax.ws.rs.POST;
@@ -48,18 +34,27 @@ import javax.ws.rs.core.Cookie;
 import javax.ws.rs.core.HttpHeaders;
 import javax.ws.rs.core.Response;
 import javax.ws.rs.core.Response.Status;
-
+import org.apache.shiro.authc.AuthenticationException;
+import org.apache.shiro.authc.AuthenticationToken;
+import org.apache.shiro.authc.IncorrectCredentialsException;
+import org.apache.shiro.authc.LockedAccountException;
+import org.apache.shiro.authc.UnknownAccountException;
+import org.apache.shiro.authc.UsernamePasswordToken;
+import org.apache.shiro.realm.Realm;
+import org.apache.shiro.subject.Subject;
 import org.apache.zeppelin.annotation.ZeppelinApi;
+import org.apache.zeppelin.conf.ZeppelinConfiguration;
+import org.apache.zeppelin.notebook.Notebook;
 import org.apache.zeppelin.notebook.NotebookAuthorization;
 import org.apache.zeppelin.realm.jwt.JWTAuthenticationToken;
 import org.apache.zeppelin.realm.jwt.KnoxJwtRealm;
 import org.apache.zeppelin.server.JsonResponse;
 import org.apache.zeppelin.ticket.TicketContainer;
 import org.apache.zeppelin.utils.SecurityUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-/**
- * Created for org.apache.zeppelin.rest.message.
- */
+/** Created for org.apache.zeppelin.rest.message. */
 @Path("/login")
 @Produces("application/json")
 public class LoginRestApi {
@@ -155,38 +150,36 @@ public class LoginRestApi {
       data.put("ticket", ticket);
 
       response = new JsonResponse(Response.Status.OK, "", data);
-      //if no exception, that's it, we're done!
+      // if no exception, that's it, we're done!
 
-      //set roles for user in NotebookAuthorization module
+      // set roles for user in NotebookAuthorization module
       NotebookAuthorization.getInstance().setRoles(principal, roles);
     } catch (UnknownAccountException uae) {
-      //username wasn't in the system, show them an error message?
+      // username wasn't in the system, show them an error message?
       LOG.error("Exception in login: ", uae);
     } catch (IncorrectCredentialsException ice) {
-      //password didn't match, try again?
+      // password didn't match, try again?
       LOG.error("Exception in login: ", ice);
     } catch (LockedAccountException lae) {
-      //account for that username is locked - can't login.  Show them a 
message?
+      // account for that username is locked - can't login.  Show them a 
message?
       LOG.error("Exception in login: ", lae);
     } catch (AuthenticationException ae) {
-      //unexpected condition - error?
+      // unexpected condition - error?
       LOG.error("Exception in login: ", ae);
     }
     return response;
   }
 
   /**
-   * Post Login
-   * Returns userName & password
-   * for anonymous access, username is always anonymous.
+   * Post Login Returns userName & password for anonymous access, username is 
always anonymous.
    * After getting this ticket, access through websockets become safe
    *
    * @return 200 response
    */
   @POST
   @ZeppelinApi
-  public Response postLogin(@FormParam("userName") String userName,
-      @FormParam("password") String password) {
+  public Response postLogin(
+      @FormParam("userName") String userName, @FormParam("password") String 
password) {
     JsonResponse response = null;
     // ticket set to anonymous for anonymous user. Simplify testing.
     Subject currentUser = org.apache.shiro.SecurityUtils.getSubject();

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRepoRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRepoRestApi.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRepoRestApi.java
index 2615c2f..bbf3692 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRepoRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRepoRestApi.java
@@ -19,38 +19,31 @@ package org.apache.zeppelin.rest;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Sets;
 import com.google.gson.JsonSyntaxException;
-
-import javax.inject.Inject;
-import org.apache.commons.lang.StringUtils;
-import org.apache.zeppelin.service.ServiceContext;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
 import java.io.IOException;
 import java.util.Collections;
 import java.util.List;
 import java.util.Set;
-
+import javax.inject.Inject;
 import javax.ws.rs.GET;
 import javax.ws.rs.PUT;
 import javax.ws.rs.Path;
 import javax.ws.rs.Produces;
 import javax.ws.rs.core.Response;
 import javax.ws.rs.core.Response.Status;
-
+import org.apache.commons.lang.StringUtils;
 import org.apache.zeppelin.annotation.ZeppelinApi;
 import org.apache.zeppelin.notebook.repo.NotebookRepoSync;
 import org.apache.zeppelin.notebook.repo.NotebookRepoWithSettings;
 import org.apache.zeppelin.rest.message.NotebookRepoSettingsRequest;
 import org.apache.zeppelin.server.JsonResponse;
+import org.apache.zeppelin.service.ServiceContext;
 import org.apache.zeppelin.socket.NotebookServer;
 import org.apache.zeppelin.user.AuthenticationInfo;
 import org.apache.zeppelin.utils.SecurityUtils;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
-/**
- * NoteRepo rest API endpoint.
- *
- */
+/** NoteRepo rest API endpoint. */
 @Path("/notebook-repositories")
 @Produces("application/json")
 public class NotebookRepoRestApi {
@@ -65,9 +58,7 @@ public class NotebookRepoRestApi {
     this.notebookWsServer = notebookWsServer;
   }
 
-  /**
-   * List all notebook repository.
-   */
+  /** List all notebook repository. */
   @GET
   @ZeppelinApi
   public Response listRepoSettings() {
@@ -77,13 +68,11 @@ public class NotebookRepoRestApi {
     return new JsonResponse<>(Status.OK, "", settings).build();
   }
 
-  /**
-   * Reload notebook repository.
-   */
+  /** Reload notebook repository. */
   @GET
   @Path("reload")
   @ZeppelinApi
-  public Response refreshRepo(){
+  public Response refreshRepo() {
     AuthenticationInfo subject = new 
AuthenticationInfo(SecurityUtils.getPrincipal());
     LOG.info("Reloading notebook repository for user {}", subject.getUser());
     try {
@@ -120,14 +109,16 @@ public class NotebookRepoRestApi {
       newSettings = NotebookRepoSettingsRequest.fromJson(payload);
     } catch (JsonSyntaxException e) {
       LOG.error("Cannot update notebook repo settings", e);
-      return new JsonResponse<>(Status.NOT_ACCEPTABLE, "",
-          ImmutableMap.of("error", "Invalid payload structure")).build();
+      return new JsonResponse<>(
+              Status.NOT_ACCEPTABLE, "", ImmutableMap.of("error", "Invalid 
payload structure"))
+          .build();
     }
 
     if (NotebookRepoSettingsRequest.isEmpty(newSettings)) {
       LOG.error("Invalid property");
-      return new JsonResponse<>(Status.NOT_ACCEPTABLE, "",
-          ImmutableMap.of("error", "Invalid payload")).build();
+      return new JsonResponse<>(
+              Status.NOT_ACCEPTABLE, "", ImmutableMap.of("error", "Invalid 
payload"))
+          .build();
     }
     LOG.info("User {} is going to change repo setting", subject.getUser());
     NotebookRepoWithSettings updatedSettings =

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookResponse.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookResponse.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookResponse.java
index 16b6692..37f1a3f 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookResponse.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookResponse.java
@@ -19,9 +19,7 @@ package org.apache.zeppelin.rest;
 
 import javax.xml.bind.annotation.XmlRootElement;
 
-/**
- * Response wrapper.
- */
+/** Response wrapper. */
 @XmlRootElement
 public class NotebookResponse {
   private String msg;

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRestApi.java
index 8411263..59c13fb 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/NotebookRestApi.java
@@ -20,7 +20,24 @@ package org.apache.zeppelin.rest;
 import com.google.common.collect.Sets;
 import com.google.common.reflect.TypeToken;
 import com.google.gson.Gson;
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.LinkedList;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
 import javax.inject.Inject;
+import javax.ws.rs.DELETE;
+import javax.ws.rs.GET;
+import javax.ws.rs.POST;
+import javax.ws.rs.PUT;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.QueryParam;
+import javax.ws.rs.core.Response;
+import javax.ws.rs.core.Response.Status;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.zeppelin.annotation.ZeppelinApi;
 import org.apache.zeppelin.conf.ZeppelinConfiguration;
@@ -51,27 +68,7 @@ import org.quartz.CronExpression;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.ws.rs.DELETE;
-import javax.ws.rs.GET;
-import javax.ws.rs.POST;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.Produces;
-import javax.ws.rs.QueryParam;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.Response.Status;
-import java.io.IOException;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.LinkedList;
-import java.util.List;
-import java.util.Map;
-import java.util.Set;
-
-/**
- * Rest api endpoint for the notebook.
- */
+/** Rest api endpoint for the notebook. */
 @Path("/notebook")
 @Produces("application/json")
 public class NotebookRestApi extends AbstractRestApi {
@@ -97,16 +94,14 @@ public class NotebookRestApi extends AbstractRestApi {
     this.zConf = notebook.getConf();
   }
 
-  /**
-   * Get note authorization information.
-   */
+  /** Get note authorization information. */
   @GET
   @Path("{noteId}/permissions")
   @ZeppelinApi
   public Response getNotePermissions(@PathParam("noteId") String noteId) 
throws IOException {
     checkIfUserIsAnon(getBlockNotAuthenticatedUserErrorMsg());
-    checkIfUserCanRead(noteId,
-        "Insufficient privileges you cannot get the list of permissions for 
this note");
+    checkIfUserCanRead(
+        noteId, "Insufficient privileges you cannot get the list of 
permissions for this note");
     HashMap<String, Set<String>> permissionsMap = new HashMap<>();
     permissionsMap.put("owners", notebookAuthorization.getOwners(noteId));
     permissionsMap.put("readers", notebookAuthorization.getReaders(noteId));
@@ -116,11 +111,16 @@ public class NotebookRestApi extends AbstractRestApi {
   }
 
   private String ownerPermissionError(Set<String> current, Set<String> 
allowed) {
-    LOG.info("Cannot change permissions. Connection owners {}. Allowed owners 
{}",
-        current.toString(), allowed.toString());
-    return "Insufficient privileges to change permissions.\n\n" +
-        "Allowed owners: " + allowed.toString() + "\n\n" +
-        "User belongs to: " + current.toString();
+    LOG.info(
+        "Cannot change permissions. Connection owners {}. Allowed owners {}",
+        current.toString(),
+        allowed.toString());
+    return "Insufficient privileges to change permissions.\n\n"
+        + "Allowed owners: "
+        + allowed.toString()
+        + "\n\n"
+        + "User belongs to: "
+        + current.toString();
   }
 
   private String getBlockNotAuthenticatedUserErrorMsg() {
@@ -133,9 +133,7 @@ public class NotebookRestApi extends AbstractRestApi {
    * In the future we might want to generalize this for the rest of the api 
enmdpoints.
    */
 
-  /**
-   * Check if the current user is not authenticated(anonymous user) or not.
-   */
+  /** Check if the current user is not authenticated(anonymous user) or not. */
   private void checkIfUserIsAnon(String errorMsg) {
     boolean isAuthenticated = SecurityUtils.isAuthenticated();
     if (isAuthenticated && SecurityUtils.getPrincipal().equals("anonymous")) {
@@ -144,9 +142,7 @@ public class NotebookRestApi extends AbstractRestApi {
     }
   }
 
-  /**
-   * Check if the current user own the given note.
-   */
+  /** Check if the current user own the given note. */
   private void checkIfUserIsOwner(String noteId, String errorMsg) {
     Set<String> userAndRoles = Sets.newHashSet();
     userAndRoles.add(SecurityUtils.getPrincipal());
@@ -156,9 +152,7 @@ public class NotebookRestApi extends AbstractRestApi {
     }
   }
 
-  /**
-   * Check if the current user is either Owner or Writer for the given note.
-   */
+  /** Check if the current user is either Owner or Writer for the given note. 
*/
   private void checkIfUserCanWrite(String noteId, String errorMsg) {
     Set<String> userAndRoles = Sets.newHashSet();
     userAndRoles.add(SecurityUtils.getPrincipal());
@@ -168,9 +162,7 @@ public class NotebookRestApi extends AbstractRestApi {
     }
   }
 
-  /**
-   * Check if the current user can access (at least he have to be reader) the 
given note.
-   */
+  /** Check if the current user can access (at least he have to be reader) the 
given note. */
   private void checkIfUserCanRead(String noteId, String errorMsg) {
     Set<String> userAndRoles = Sets.newHashSet();
     userAndRoles.add(SecurityUtils.getPrincipal());
@@ -180,9 +172,7 @@ public class NotebookRestApi extends AbstractRestApi {
     }
   }
 
-  /**
-   * Check if the current user can run the given note.
-   */
+  /** Check if the current user can run the given note. */
   private void checkIfUserCanRun(String noteId, String errorMsg) {
     Set<String> userAndRoles = Sets.newHashSet();
     userAndRoles.add(SecurityUtils.getPrincipal());
@@ -211,9 +201,7 @@ public class NotebookRestApi extends AbstractRestApi {
     }
   }
 
-  /**
-   * Set note authorization information.
-   */
+  /** Set note authorization information. */
   @PUT
   @Path("{noteId}/permissions")
   @ZeppelinApi
@@ -226,16 +214,21 @@ public class NotebookRestApi extends AbstractRestApi {
     userAndRoles.addAll(roles);
 
     checkIfUserIsAnon(getBlockNotAuthenticatedUserErrorMsg());
-    checkIfUserIsOwner(noteId,
-        ownerPermissionError(userAndRoles, 
notebookAuthorization.getOwners(noteId)));
+    checkIfUserIsOwner(
+        noteId, ownerPermissionError(userAndRoles, 
notebookAuthorization.getOwners(noteId)));
 
     HashMap<String, HashSet<String>> permMap =
-        gson.fromJson(req, new TypeToken<HashMap<String, HashSet<String>>>() {
-        }.getType());
+        gson.fromJson(req, new TypeToken<HashMap<String, HashSet<String>>>() 
{}.getType());
     Note note = notebook.getNote(noteId);
 
-    LOG.info("Set permissions {} {} {} {} {} {}", noteId, principal, 
permMap.get("owners"),
-        permMap.get("readers"), permMap.get("runners"), 
permMap.get("writers"));
+    LOG.info(
+        "Set permissions {} {} {} {} {} {}",
+        noteId,
+        principal,
+        permMap.get("owners"),
+        permMap.get("readers"),
+        permMap.get("runners"),
+        permMap.get("writers"));
 
     HashSet<String> readers = permMap.get("readers");
     HashSet<String> runners = permMap.get("runners");
@@ -273,8 +266,11 @@ public class NotebookRestApi extends AbstractRestApi {
     notebookAuthorization.setRunners(noteId, runners);
     notebookAuthorization.setWriters(noteId, writers);
     notebookAuthorization.setOwners(noteId, owners);
-    LOG.debug("After set permissions {} {} {} {}", 
notebookAuthorization.getOwners(noteId),
-        notebookAuthorization.getReaders(noteId), 
notebookAuthorization.getRunners(noteId),
+    LOG.debug(
+        "After set permissions {} {} {} {}",
+        notebookAuthorization.getOwners(noteId),
+        notebookAuthorization.getReaders(noteId),
+        notebookAuthorization.getRunners(noteId),
         notebookAuthorization.getWriters(noteId));
     AuthenticationInfo subject = new 
AuthenticationInfo(SecurityUtils.getPrincipal());
     note.persist(subject);
@@ -286,8 +282,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @GET
   @ZeppelinApi
   public Response getNoteList() throws IOException {
-    List<Map<String, String>> notesInfo = notebookService.listNotes(false, 
getServiceContext(),
-        new RestServiceCallback());
+    List<Map<String, String>> notesInfo =
+        notebookService.listNotes(false, getServiceContext(), new 
RestServiceCallback());
     return new JsonResponse<>(Status.OK, "", notesInfo).build();
   }
 
@@ -295,8 +291,7 @@ public class NotebookRestApi extends AbstractRestApi {
   @Path("{noteId}")
   @ZeppelinApi
   public Response getNote(@PathParam("noteId") String noteId) throws 
IOException {
-    Note note =
-        notebookService.getNote(noteId, getServiceContext(), new 
RestServiceCallback());
+    Note note = notebookService.getNote(noteId, getServiceContext(), new 
RestServiceCallback());
     return new JsonResponse<>(Status.OK, "", note).build();
   }
 
@@ -327,8 +322,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @Path("import")
   @ZeppelinApi
   public Response importNote(String noteJson) throws IOException {
-    Note note = notebookService.importNote(null, noteJson, getServiceContext(),
-        new RestServiceCallback());
+    Note note =
+        notebookService.importNote(null, noteJson, getServiceContext(), new 
RestServiceCallback());
     return new JsonResponse<>(Status.OK, "", note.getId()).build();
   }
 
@@ -345,11 +340,12 @@ public class NotebookRestApi extends AbstractRestApi {
     String user = SecurityUtils.getPrincipal();
     LOG.info("Create new note by JSON {}", message);
     NewNoteRequest request = NewNoteRequest.fromJson(message);
-    Note note = notebookService.createNote(
-        request.getName(),
-        
zConf.getString(ZeppelinConfiguration.ConfVars.ZEPPELIN_INTERPRETER_GROUP_DEFAULT),
-        getServiceContext(),
-        new RestServiceCallback<>());
+    Note note =
+        notebookService.createNote(
+            request.getName(),
+            
zConf.getString(ZeppelinConfiguration.ConfVars.ZEPPELIN_INTERPRETER_GROUP_DEFAULT),
+            getServiceContext(),
+            new RestServiceCallback<>());
     AuthenticationInfo subject = new 
AuthenticationInfo(SecurityUtils.getPrincipal());
     if (request.getParagraphs() != null) {
       for (NewParagraphRequest paragraphRequest : request.getParagraphs()) {
@@ -372,7 +368,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @ZeppelinApi
   public Response deleteNote(@PathParam("noteId") String noteId) throws 
IOException {
     LOG.info("Delete note {} ", noteId);
-    notebookService.removeNote(noteId,
+    notebookService.removeNote(
+        noteId,
         getServiceContext(),
         new RestServiceCallback<String>() {
           @Override
@@ -406,14 +403,18 @@ public class NotebookRestApi extends AbstractRestApi {
       newNoteName = request.getName();
     }
     AuthenticationInfo subject = new 
AuthenticationInfo(SecurityUtils.getPrincipal());
-    Note newNote = notebookService.cloneNote(noteId, newNoteName, 
getServiceContext(),
-        new RestServiceCallback<Note>(){
-          @Override
-          public void onSuccess(Note newNote, ServiceContext context) throws 
IOException {
-            notebookServer.broadcastNote(newNote);
-            notebookServer.broadcastNoteList(subject, 
context.getUserAndRoles());
-          }
-        });
+    Note newNote =
+        notebookService.cloneNote(
+            noteId,
+            newNoteName,
+            getServiceContext(),
+            new RestServiceCallback<Note>() {
+              @Override
+              public void onSuccess(Note newNote, ServiceContext context) 
throws IOException {
+                notebookServer.broadcastNote(newNote);
+                notebookServer.broadcastNoteList(subject, 
context.getUserAndRoles());
+              }
+            });
     return new JsonResponse<>(Status.OK, "", newNote.getId()).build();
   }
 
@@ -427,8 +428,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @PUT
   @Path("{noteId}/rename")
   @ZeppelinApi
-  public Response renameNote(@PathParam("noteId") String noteId,
-                             String message) throws IOException {
+  public Response renameNote(@PathParam("noteId") String noteId, String 
message)
+      throws IOException {
     LOG.info("rename note by JSON {}", message);
     RenameNoteRequest request = gson.fromJson(message, 
RenameNoteRequest.class);
     String newName = request.getName();
@@ -436,8 +437,11 @@ public class NotebookRestApi extends AbstractRestApi {
       LOG.warn("Trying to rename notebook {} with empty name parameter", 
noteId);
       throw new BadRequestException("name can not be empty");
     }
-    notebookService.renameNote(noteId, request.getName(), getServiceContext(),
-        new RestServiceCallback<Note>(){
+    notebookService.renameNote(
+        noteId,
+        request.getName(),
+        getServiceContext(),
+        new RestServiceCallback<Note>() {
           @Override
           public void onSuccess(Note note, ServiceContext context) throws 
IOException {
             notebookServer.broadcastNote(note);
@@ -491,8 +495,9 @@ public class NotebookRestApi extends AbstractRestApi {
   @GET
   @Path("{noteId}/paragraph/{paragraphId}")
   @ZeppelinApi
-  public Response getParagraph(@PathParam("noteId") String noteId,
-                               @PathParam("paragraphId") String paragraphId) 
throws IOException {
+  public Response getParagraph(
+      @PathParam("noteId") String noteId, @PathParam("paragraphId") String 
paragraphId)
+      throws IOException {
     LOG.info("get paragraph {} {}", noteId, paragraphId);
 
     Note note = notebook.getNote(noteId);
@@ -508,14 +513,16 @@ public class NotebookRestApi extends AbstractRestApi {
    * Update paragraph.
    *
    * @param message json containing the "text" and optionally the "title" of 
the paragraph, e.g.
-   *                {"text" : "updated text", "title" : "Updated title" }
+   *     {"text" : "updated text", "title" : "Updated title" }
    */
   @PUT
   @Path("{noteId}/paragraph/{paragraphId}")
   @ZeppelinApi
-  public Response updateParagraph(@PathParam("noteId") String noteId,
-                                  @PathParam("paragraphId") String paragraphId,
-                                  String message) throws IOException {
+  public Response updateParagraph(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      String message)
+      throws IOException {
     String user = SecurityUtils.getPrincipal();
     LOG.info("{} will update paragraph {} {}", user, noteId, paragraphId);
 
@@ -541,9 +548,11 @@ public class NotebookRestApi extends AbstractRestApi {
   @PUT
   @Path("{noteId}/paragraph/{paragraphId}/config")
   @ZeppelinApi
-  public Response updateParagraphConfig(@PathParam("noteId") String noteId,
-                                        @PathParam("paragraphId") String 
paragraphId,
-                                        String message) throws IOException {
+  public Response updateParagraphConfig(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      String message)
+      throws IOException {
     String user = SecurityUtils.getPrincipal();
     LOG.info("{} will update paragraph config {} {}", user, noteId, 
paragraphId);
 
@@ -570,12 +579,16 @@ public class NotebookRestApi extends AbstractRestApi {
   @POST
   @Path("{noteId}/paragraph/{paragraphId}/move/{newIndex}")
   @ZeppelinApi
-  public Response moveParagraph(@PathParam("noteId") String noteId,
-                                @PathParam("paragraphId") String paragraphId,
-                                @PathParam("newIndex") String newIndex)
+  public Response moveParagraph(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      @PathParam("newIndex") String newIndex)
       throws IOException {
     LOG.info("move paragraph {} {} {}", noteId, paragraphId, newIndex);
-    notebookService.moveParagraph(noteId, paragraphId, 
Integer.parseInt(newIndex),
+    notebookService.moveParagraph(
+        noteId,
+        paragraphId,
+        Integer.parseInt(newIndex),
         getServiceContext(),
         new RestServiceCallback<Paragraph>() {
           @Override
@@ -584,7 +597,6 @@ public class NotebookRestApi extends AbstractRestApi {
           }
         });
     return new JsonResponse(Status.OK, "").build();
-
   }
 
   /**
@@ -597,10 +609,14 @@ public class NotebookRestApi extends AbstractRestApi {
   @DELETE
   @Path("{noteId}/paragraph/{paragraphId}")
   @ZeppelinApi
-  public Response deleteParagraph(@PathParam("noteId") String noteId,
-                                  @PathParam("paragraphId") String 
paragraphId) throws IOException {
+  public Response deleteParagraph(
+      @PathParam("noteId") String noteId, @PathParam("paragraphId") String 
paragraphId)
+      throws IOException {
     LOG.info("delete paragraph {} {}", noteId, paragraphId);
-    notebookService.removeParagraph(noteId, paragraphId, getServiceContext(),
+    notebookService.removeParagraph(
+        noteId,
+        paragraphId,
+        getServiceContext(),
         new RestServiceCallback<Paragraph>() {
           @Override
           public void onSuccess(Paragraph p, ServiceContext context) throws 
IOException {
@@ -620,11 +636,10 @@ public class NotebookRestApi extends AbstractRestApi {
   @PUT
   @Path("{noteId}/clear")
   @ZeppelinApi
-  public Response clearAllParagraphOutput(@PathParam("noteId") String noteId)
-      throws IOException {
+  public Response clearAllParagraphOutput(@PathParam("noteId") String noteId) 
throws IOException {
     LOG.info("clear all paragraph output of note {}", noteId);
-    notebookService.clearAllParagraphOutput(noteId, getServiceContext(),
-        new RestServiceCallback<>());
+    notebookService.clearAllParagraphOutput(
+        noteId, getServiceContext(), new RestServiceCallback<>());
     return new JsonResponse(Status.OK, "").build();
   }
 
@@ -639,8 +654,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @POST
   @Path("job/{noteId}")
   @ZeppelinApi
-  public Response runNoteJobs(@PathParam("noteId") String noteId,
-                              @QueryParam("waitToFinish") Boolean waitToFinish)
+  public Response runNoteJobs(
+      @PathParam("noteId") String noteId, @QueryParam("waitToFinish") Boolean 
waitToFinish)
       throws IOException, IllegalArgumentException {
     boolean blocking = waitToFinish == null || waitToFinish;
     LOG.info("run note jobs {} waitToFinish: {}", noteId, blocking);
@@ -654,8 +669,10 @@ public class NotebookRestApi extends AbstractRestApi {
       note.runAll(subject, blocking);
     } catch (Exception ex) {
       LOG.error("Exception from run", ex);
-      return new JsonResponse<>(Status.PRECONDITION_FAILED,
-          ex.getMessage() + "- Not selected or Invalid Interpreter 
bind").build();
+      return new JsonResponse<>(
+              Status.PRECONDITION_FAILED,
+              ex.getMessage() + "- Not selected or Invalid Interpreter bind")
+          .build();
     }
     return new JsonResponse<>(Status.OK).build();
   }
@@ -710,7 +727,7 @@ public class NotebookRestApi extends AbstractRestApi {
   /**
    * Get note paragraph job status REST API.
    *
-   * @param noteId      ID of Note
+   * @param noteId ID of Note
    * @param paragraphId ID of Paragraph
    * @return JSON with status.OK
    * @throws IOException
@@ -719,8 +736,8 @@ public class NotebookRestApi extends AbstractRestApi {
   @GET
   @Path("job/{noteId}/{paragraphId}")
   @ZeppelinApi
-  public Response getNoteParagraphJobStatus(@PathParam("noteId") String noteId,
-                                            @PathParam("paragraphId") String 
paragraphId)
+  public Response getNoteParagraphJobStatus(
+      @PathParam("noteId") String noteId, @PathParam("paragraphId") String 
paragraphId)
       throws IOException, IllegalArgumentException {
     LOG.info("get note paragraph job status.");
     Note note = notebook.getNote(noteId);
@@ -730,15 +747,15 @@ public class NotebookRestApi extends AbstractRestApi {
     Paragraph paragraph = note.getParagraph(paragraphId);
     checkIfParagraphIsNotNull(paragraph);
 
-    return new JsonResponse<>(Status.OK, null, 
note.generateSingleParagraphInfo(paragraphId)).
-        build();
+    return new JsonResponse<>(Status.OK, null, 
note.generateSingleParagraphInfo(paragraphId))
+        .build();
   }
 
   /**
    * Run asynchronously paragraph job REST API.
    *
-   * @param message - JSON with params if user wants to update dynamic form's 
value
-   *                null, empty string, empty json if user doesn't want to 
update
+   * @param message - JSON with params if user wants to update dynamic form's 
value null, empty
+   *     string, empty json if user doesn't want to update
    * @return JSON with status.OK
    * @throws IOException
    * @throws IllegalArgumentException
@@ -746,8 +763,10 @@ public class NotebookRestApi extends AbstractRestApi {
   @POST
   @Path("job/{noteId}/{paragraphId}")
   @ZeppelinApi
-  public Response runParagraph(@PathParam("noteId") String noteId,
-                               @PathParam("paragraphId") String paragraphId, 
String message)
+  public Response runParagraph(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      String message)
       throws IOException, IllegalArgumentException {
     LOG.info("run paragraph job asynchronously {} {} {}", noteId, paragraphId, 
message);
 
@@ -757,18 +776,27 @@ public class NotebookRestApi extends AbstractRestApi {
           RunParagraphWithParametersRequest.fromJson(message);
       params = request.getParams();
     }
-    notebookService.runParagraph(noteId, paragraphId, "", "", params,
-        new HashMap<>(), false, false, getServiceContext(), new 
RestServiceCallback<>());
+    notebookService.runParagraph(
+        noteId,
+        paragraphId,
+        "",
+        "",
+        params,
+        new HashMap<>(),
+        false,
+        false,
+        getServiceContext(),
+        new RestServiceCallback<>());
     return new JsonResponse<>(Status.OK).build();
   }
 
   /**
    * Run synchronously a paragraph REST API.
    *
-   * @param noteId      - noteId
+   * @param noteId - noteId
    * @param paragraphId - paragraphId
-   * @param message     - JSON with params if user wants to update dynamic 
form's value
-   *                    null, empty string, empty json if user doesn't want to 
update
+   * @param message - JSON with params if user wants to update dynamic form's 
value null, empty
+   *     string, empty json if user doesn't want to update
    * @return JSON with status.OK
    * @throws IOException
    * @throws IllegalArgumentException
@@ -776,9 +804,10 @@ public class NotebookRestApi extends AbstractRestApi {
   @POST
   @Path("run/{noteId}/{paragraphId}")
   @ZeppelinApi
-  public Response runParagraphSynchronously(@PathParam("noteId") String noteId,
-                                            @PathParam("paragraphId") String 
paragraphId,
-                                            String message)
+  public Response runParagraphSynchronously(
+      @PathParam("noteId") String noteId,
+      @PathParam("paragraphId") String paragraphId,
+      String message)
       throws IOException, IllegalArgumentException {
     LOG.info("run paragraph synchronously {} {} {}", noteId, paragraphId, 
message);
 
@@ -788,8 +817,17 @@ public class NotebookRestApi extends AbstractRestApi {
           RunParagraphWithParametersRequest.fromJson(message);
       params = request.getParams();
     }
-    if (notebookService.runParagraph(noteId, paragraphId, "", "", params,
-        new HashMap<>(), false, true, getServiceContext(), new 
RestServiceCallback<>())) {
+    if (notebookService.runParagraph(
+        noteId,
+        paragraphId,
+        "",
+        "",
+        params,
+        new HashMap<>(),
+        false,
+        true,
+        getServiceContext(),
+        new RestServiceCallback<>())) {
       Note note = notebookService.getNote(noteId, getServiceContext(), new 
RestServiceCallback<>());
       Paragraph p = note.getParagraph(paragraphId);
       InterpreterResult result = p.getReturn();
@@ -806,7 +844,7 @@ public class NotebookRestApi extends AbstractRestApi {
   /**
    * Stop(delete) paragraph job REST API.
    *
-   * @param noteId      ID of Note
+   * @param noteId ID of Note
    * @param paragraphId ID of Paragraph
    * @return JSON with status.OK
    * @throws IOException
@@ -815,12 +853,12 @@ public class NotebookRestApi extends AbstractRestApi {
   @DELETE
   @Path("job/{noteId}/{paragraphId}")
   @ZeppelinApi
-  public Response cancelParagraph(@PathParam("noteId") String noteId,
-                                  @PathParam("paragraphId") String paragraphId)
+  public Response cancelParagraph(
+      @PathParam("noteId") String noteId, @PathParam("paragraphId") String 
paragraphId)
       throws IOException, IllegalArgumentException {
     LOG.info("stop paragraph job {} ", noteId);
-    notebookService.cancelParagraph(noteId, paragraphId, getServiceContext(),
-        new RestServiceCallback<Paragraph>());
+    notebookService.cancelParagraph(
+        noteId, paragraphId, getServiceContext(), new 
RestServiceCallback<Paragraph>());
     return new JsonResponse<>(Status.OK).build();
   }
 
@@ -875,8 +913,8 @@ public class NotebookRestApi extends AbstractRestApi {
 
     Note note = notebook.getNote(noteId);
     checkIfNoteIsNotNull(note);
-    checkIfUserIsOwner(noteId,
-        "Insufficient privileges you cannot remove this cron job from this 
note");
+    checkIfUserIsOwner(
+        noteId, "Insufficient privileges you cannot remove this cron job from 
this note");
     checkIfNoteSupportsCron(note);
 
     Map<String, Object> config = note.getConfig();
@@ -922,8 +960,9 @@ public class NotebookRestApi extends AbstractRestApi {
   @ZeppelinApi
   public Response getJobListforNote() throws IOException, 
IllegalArgumentException {
     LOG.info("Get note jobs for job manager");
-    List<JobManagerService.NoteJobInfo> noteJobs = jobManagerService
-        .getNoteJobInfoByUnixTime(0, getServiceContext(), new 
RestServiceCallback<>());
+    List<JobManagerService.NoteJobInfo> noteJobs =
+        jobManagerService.getNoteJobInfoByUnixTime(
+            0, getServiceContext(), new RestServiceCallback<>());
     Map<String, Object> response = new HashMap<>();
     response.put("lastResponseUnixTime", System.currentTimeMillis());
     response.put("jobs", noteJobs);
@@ -932,8 +971,8 @@ public class NotebookRestApi extends AbstractRestApi {
 
   /**
    * Get updated note jobs for job manager
-   * <p>
-   * Return the `Note` change information within the post unix timestamp.
+   *
+   * <p>Return the `Note` change information within the post unix timestamp.
    *
    * @return JSON with status.OK
    * @throws IOException
@@ -946,17 +985,15 @@ public class NotebookRestApi extends AbstractRestApi {
       throws IOException, IllegalArgumentException {
     LOG.info("Get updated note jobs lastUpdateTime {}", lastUpdateUnixTime);
     List<JobManagerService.NoteJobInfo> noteJobs =
-        jobManagerService.getNoteJobInfoByUnixTime(lastUpdateUnixTime, 
getServiceContext(),
-            new RestServiceCallback<>());
+        jobManagerService.getNoteJobInfoByUnixTime(
+            lastUpdateUnixTime, getServiceContext(), new 
RestServiceCallback<>());
     Map<String, Object> response = new HashMap<>();
     response.put("lastResponseUnixTime", System.currentTimeMillis());
     response.put("jobs", noteJobs);
     return new JsonResponse<>(Status.OK, response).build();
   }
 
-  /**
-   * Search for a Notes with permissions.
-   */
+  /** Search for a Notes with permissions. */
   @GET
   @Path("search")
   @ZeppelinApi
@@ -971,10 +1008,10 @@ public class NotebookRestApi extends AbstractRestApi {
     for (int i = 0; i < notesFound.size(); i++) {
       String[] ids = notesFound.get(i).get("id").split("/", 2);
       String noteId = ids[0];
-      if (!notebookAuthorization.isOwner(noteId, userAndRoles) &&
-          !notebookAuthorization.isReader(noteId, userAndRoles) &&
-          !notebookAuthorization.isWriter(noteId, userAndRoles) &&
-          !notebookAuthorization.isRunner(noteId, userAndRoles)) {
+      if (!notebookAuthorization.isOwner(noteId, userAndRoles)
+          && !notebookAuthorization.isReader(noteId, userAndRoles)
+          && !notebookAuthorization.isWriter(noteId, userAndRoles)
+          && !notebookAuthorization.isRunner(noteId, userAndRoles)) {
         notesFound.remove(i);
         i--;
       }
@@ -983,7 +1020,6 @@ public class NotebookRestApi extends AbstractRestApi {
     return new JsonResponse<>(Status.OK, notesFound).build();
   }
 
-
   private void handleParagraphParams(String message, Note note, Paragraph 
paragraph)
       throws IOException {
     // handle params if presented
@@ -1013,8 +1049,11 @@ public class NotebookRestApi extends AbstractRestApi {
   private void configureParagraph(Paragraph p, Map<String, Object> newConfig, 
String user) {
     LOG.info("Configure Paragraph for user {}", user);
     if (newConfig == null || newConfig.isEmpty()) {
-      LOG.warn("{} is trying to update paragraph {} of note {} with empty 
config",
-          user, p.getId(), p.getNote().getId());
+      LOG.warn(
+          "{} is trying to update paragraph {} of note {} with empty config",
+          user,
+          p.getId(),
+          p.getNote().getId());
       throw new BadRequestException("paragraph config cannot be empty");
     }
     Map<String, Object> origConfig = p.getConfig();

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/SecurityRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/SecurityRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/SecurityRestApi.java
index 45b76fa..b4d71d9 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/SecurityRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/SecurityRestApi.java
@@ -17,6 +17,18 @@
 package org.apache.zeppelin.rest;
 
 import com.google.gson.Gson;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.Comparator;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+import javax.ws.rs.PathParam;
+import javax.ws.rs.Produces;
+import javax.ws.rs.core.Response;
 import org.apache.commons.lang3.StringUtils;
 import org.apache.zeppelin.annotation.ZeppelinApi;
 import org.apache.zeppelin.conf.ZeppelinConfiguration;
@@ -26,22 +38,7 @@ import org.apache.zeppelin.utils.SecurityUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import javax.ws.rs.GET;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.Response;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.Comparator;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.List;
-import java.util.Map;
-
-/**
- * Zeppelin security rest api endpoint.
- */
+/** Zeppelin security rest api endpoint. */
 @Path("/security")
 @Produces("application/json")
 public class SecurityRestApi {
@@ -49,10 +46,8 @@ public class SecurityRestApi {
   private static final Gson gson = new Gson();
 
   /**
-   * Get ticket
-   * Returns username & ticket
-   * for anonymous access, username is always anonymous.
-   * After getting this ticket, access through websockets become safe
+   * Get ticket Returns username & ticket for anonymous access, username is 
always anonymous. After
+   * getting this ticket, access through websockets become safe
    *
    * @return 200 response
    */
@@ -85,7 +80,7 @@ public class SecurityRestApi {
   /**
    * Get userlist.
    *
-   * Returns list of all user from available realms
+   * <p>Returns list of all user from available realms
    *
    * @return 200 response
    */
@@ -101,17 +96,19 @@ public class SecurityRestApi {
     List<String> autoSuggestRoleList = new ArrayList<>();
     Collections.sort(usersList);
     Collections.sort(rolesList);
-    Collections.sort(usersList, new Comparator<String>() {
-      @Override
-      public int compare(String o1, String o2) {
-        if (o1.matches(searchText + "(.*)") && o2.matches(searchText + 
"(.*)")) {
-          return 0;
-        } else if (o1.matches(searchText + "(.*)")) {
-          return -1;
-        }
-        return 0;
-      }
-    });
+    Collections.sort(
+        usersList,
+        new Comparator<String>() {
+          @Override
+          public int compare(String o1, String o2) {
+            if (o1.matches(searchText + "(.*)") && o2.matches(searchText + 
"(.*)")) {
+              return 0;
+            } else if (o1.matches(searchText + "(.*)")) {
+              return -1;
+            }
+            return 0;
+          }
+        });
     int maxLength = 0;
     for (String user : usersList) {
       if (StringUtils.containsIgnoreCase(user, searchText)) {

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/ZeppelinRestApi.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/ZeppelinRestApi.java 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/ZeppelinRestApi.java
index 20d6973..75e92e5 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/ZeppelinRestApi.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/ZeppelinRestApi.java
@@ -16,12 +16,8 @@
  */
 package org.apache.zeppelin.rest;
 
-import org.apache.log4j.Level;
-import org.apache.log4j.Logger;
-
 import java.util.HashMap;
 import java.util.Map;
-
 import javax.servlet.http.HttpServletRequest;
 import javax.ws.rs.GET;
 import javax.ws.rs.PUT;
@@ -29,7 +25,8 @@ import javax.ws.rs.Path;
 import javax.ws.rs.PathParam;
 import javax.ws.rs.core.Context;
 import javax.ws.rs.core.Response;
-
+import org.apache.log4j.Level;
+import org.apache.log4j.Logger;
 import org.apache.zeppelin.annotation.ZeppelinApi;
 import org.apache.zeppelin.server.JsonResponse;
 import org.apache.zeppelin.util.Util;
@@ -73,16 +70,18 @@ public class ZeppelinRestApi {
    */
   @PUT
   @Path("log/level/{logLevel}")
-  public Response changeRootLogLevel(@Context HttpServletRequest request,
-      @PathParam("logLevel") String logLevel) {
+  public Response changeRootLogLevel(
+      @Context HttpServletRequest request, @PathParam("logLevel") String 
logLevel) {
     Level level = Level.toLevel(logLevel);
     if 
(logLevel.toLowerCase().equalsIgnoreCase(level.toString().toLowerCase())) {
       Logger.getRootLogger().setLevel(level);
       return new JsonResponse<>(Response.Status.OK).build();
     } else {
-      return new JsonResponse<>(Response.Status.NOT_ACCEPTABLE,
-          "Please check LOG level specified. Valid values: DEBUG, ERROR, 
FATAL, "
-              + "INFO, TRACE, WARN").build();
+      return new JsonResponse<>(
+              Response.Status.NOT_ACCEPTABLE,
+              "Please check LOG level specified. Valid values: DEBUG, ERROR, 
FATAL, "
+                  + "INFO, TRACE, WARN")
+          .build();
     }
   }
 }

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/BadRequestException.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/BadRequestException.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/BadRequestException.java
index 9af2fdd..15a7d4d 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/BadRequestException.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/BadRequestException.java
@@ -20,12 +20,9 @@ import static javax.ws.rs.core.Response.Status.BAD_REQUEST;
 
 import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.Response;
-
 import org.apache.zeppelin.utils.ExceptionUtils;
 
-/**
- * BadRequestException handler for WebApplicationException.
- */
+/** BadRequestException handler for WebApplicationException. */
 public class BadRequestException extends WebApplicationException {
   public BadRequestException() {
     super(ExceptionUtils.jsonResponse(BAD_REQUEST));

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ForbiddenException.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ForbiddenException.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ForbiddenException.java
index abe08eb..17e0a13 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ForbiddenException.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ForbiddenException.java
@@ -20,12 +20,9 @@ import static javax.ws.rs.core.Response.Status.FORBIDDEN;
 
 import javax.ws.rs.WebApplicationException;
 import javax.ws.rs.core.Response;
-
 import org.apache.zeppelin.utils.ExceptionUtils;
 
-/**
- * UnauthorizedException handler for WebApplicationException.
- */
+/** UnauthorizedException handler for WebApplicationException. */
 public class ForbiddenException extends WebApplicationException {
   private static Response forbiddenJson(String message) {
     return ExceptionUtils.jsonResponseContent(FORBIDDEN, message);

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/NoteNotFoundException.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/NoteNotFoundException.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/NoteNotFoundException.java
index 773d749..a406089 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/NoteNotFoundException.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/NoteNotFoundException.java
@@ -17,16 +17,14 @@
 
 package org.apache.zeppelin.rest.exception;
 
-import org.apache.zeppelin.utils.ExceptionUtils;
+import static javax.ws.rs.core.Response.Status.NOT_FOUND;
 
 import javax.ws.rs.WebApplicationException;
-
-import static javax.ws.rs.core.Response.Status.NOT_FOUND;
+import org.apache.zeppelin.utils.ExceptionUtils;
 
 public class NoteNotFoundException extends WebApplicationException {
 
   public NoteNotFoundException(String noteId) {
     super(ExceptionUtils.jsonResponseContent(NOT_FOUND, "No such note: " + 
noteId));
   }
-
 }

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ParagraphNotFoundException.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ParagraphNotFoundException.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ParagraphNotFoundException.java
index 4ec5ee1..4213cc7 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ParagraphNotFoundException.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/ParagraphNotFoundException.java
@@ -17,11 +17,10 @@
 
 package org.apache.zeppelin.rest.exception;
 
-import org.apache.zeppelin.utils.ExceptionUtils;
+import static javax.ws.rs.core.Response.Status.NOT_FOUND;
 
 import javax.ws.rs.WebApplicationException;
-
-import static javax.ws.rs.core.Response.Status.NOT_FOUND;
+import org.apache.zeppelin.utils.ExceptionUtils;
 
 public class ParagraphNotFoundException extends WebApplicationException {
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/WebApplicationExceptionMapper.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/WebApplicationExceptionMapper.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/WebApplicationExceptionMapper.java
index 79e3fe0..5c83828 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/WebApplicationExceptionMapper.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/exception/WebApplicationExceptionMapper.java
@@ -31,14 +31,14 @@ public class WebApplicationExceptionMapper implements 
ExceptionMapper<WebApplica
 
   public WebApplicationExceptionMapper() {
     GsonBuilder gsonBuilder = new 
GsonBuilder().enableComplexMapKeySerialization();
-    gsonBuilder.registerTypeHierarchyAdapter(
-        Exception.class, new ExceptionSerializer());
+    gsonBuilder.registerTypeHierarchyAdapter(Exception.class, new 
ExceptionSerializer());
     this.gson = gsonBuilder.create();
   }
 
   @Override
   public Response toResponse(WebApplicationException exception) {
     return Response.status(exception.getResponse().getStatus())
-        .entity(gson.toJson(exception)).build();
+        .entity(gson.toJson(exception))
+        .build();
   }
 }

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/CronRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/CronRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/CronRequest.java
index 404a3c3..fb1408c 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/CronRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/CronRequest.java
@@ -17,19 +17,15 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
 import org.apache.zeppelin.common.JsonSerializable;
 
-/**
- *  CronRequest rest api request message.
- */
+/** CronRequest rest api request message. */
 public class CronRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
 
   String cron;
 
-  public CronRequest (){
-  }
+  public CronRequest() {}
 
   public String getCronString() {
     return cron;

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewInterpreterSettingRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewInterpreterSettingRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewInterpreterSettingRequest.java
index 3d577ef..bf5cc5d 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewInterpreterSettingRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewInterpreterSettingRequest.java
@@ -17,18 +17,14 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
 import java.util.List;
 import java.util.Map;
-
 import org.apache.zeppelin.common.JsonSerializable;
 import org.apache.zeppelin.dep.Dependency;
 import org.apache.zeppelin.interpreter.InterpreterOption;
 import org.apache.zeppelin.interpreter.InterpreterProperty;
 
-/**
- * NewInterpreterSetting REST API request message.
- */
+/** NewInterpreterSetting REST API request message. */
 public class NewInterpreterSettingRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
   private String name;
@@ -38,8 +34,7 @@ public class NewInterpreterSettingRequest implements 
JsonSerializable {
   private List<Dependency> dependencies;
   private InterpreterOption option;
 
-  public NewInterpreterSettingRequest() {
-  }
+  public NewInterpreterSettingRequest() {}
 
   public String getName() {
     return name;

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewNoteRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewNoteRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewNoteRequest.java
index 9cf1df1..e1aa3c1 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewNoteRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewNoteRequest.java
@@ -17,22 +17,17 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
 import java.util.List;
-
 import org.apache.zeppelin.common.JsonSerializable;
 
-/**
- *  NewNoteRequest rest api request message.
- */
+/** NewNoteRequest rest api request message. */
 public class NewNoteRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
 
   String name;
   List<NewParagraphRequest> paragraphs;
 
-  public NewNoteRequest (){
-  }
+  public NewNoteRequest() {}
 
   public String getName() {
     return name;

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewParagraphRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewParagraphRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewParagraphRequest.java
index e0cb786..506fc72 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewParagraphRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NewParagraphRequest.java
@@ -17,18 +17,15 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
 import java.util.HashMap;
-
 import org.apache.zeppelin.common.JsonSerializable;
 
 /**
  * NewParagraphRequest rest api request message
  *
- * index field will be ignored when it's used to provide initial paragraphs
- * visualization (optional) one of:
- * table,pieChart,multibarChart,stackedAreaChart,lineChart,scatterChart
- * colWidth (optional), e.g. 12.0
+ * <p>index field will be ignored when it's used to provide initial paragraphs 
visualization
+ * (optional) one of: 
table,pieChart,multibarChart,stackedAreaChart,lineChart,scatterChart colWidth
+ * (optional), e.g. 12.0
  */
 public class NewParagraphRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
@@ -36,10 +33,9 @@ public class NewParagraphRequest implements JsonSerializable 
{
   String title;
   String text;
   Double index;
-  HashMap< String, Object > config;
+  HashMap<String, Object> config;
 
-  public NewParagraphRequest() {
-  }
+  public NewParagraphRequest() {}
 
   public String getTitle() {
     return title;
@@ -53,7 +49,7 @@ public class NewParagraphRequest implements JsonSerializable {
     return index;
   }
 
-  public HashMap< String, Object > getConfig() {
+  public HashMap<String, Object> getConfig() {
     return config;
   }
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NotebookRepoSettingsRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NotebookRepoSettingsRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NotebookRepoSettingsRequest.java
index 31f3be8..ad6db52 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NotebookRepoSettingsRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/NotebookRepoSettingsRequest.java
@@ -17,17 +17,12 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
-import org.apache.commons.lang.StringUtils;
-
 import java.util.Collections;
 import java.util.Map;
-
+import org.apache.commons.lang.StringUtils;
 import org.apache.zeppelin.common.JsonSerializable;
 
-/**
- * Represent payload of a notebook repo settings.
- */
+/** Represent payload of a notebook repo settings. */
 public class NotebookRepoSettingsRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
 

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RenameNoteRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RenameNoteRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RenameNoteRequest.java
index 72ee2a6..ad0e5a3 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RenameNoteRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RenameNoteRequest.java
@@ -17,17 +17,11 @@
 
 package org.apache.zeppelin.rest.message;
 
-/**
- *  RenameNoteRequest rest api request message
- *
- */
-
+/** RenameNoteRequest rest api request message */
 public class RenameNoteRequest {
   String name;
 
-  public RenameNoteRequest (){
-
-  }
+  public RenameNoteRequest() {}
 
   public String getName() {
     return name;

http://git-wip-us.apache.org/repos/asf/zeppelin/blob/55f6c91c/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RestartInterpreterRequest.java
----------------------------------------------------------------------
diff --git 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RestartInterpreterRequest.java
 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RestartInterpreterRequest.java
index 8a6d0d0..479d2a9 100644
--- 
a/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RestartInterpreterRequest.java
+++ 
b/zeppelin-server/src/main/java/org/apache/zeppelin/rest/message/RestartInterpreterRequest.java
@@ -17,19 +17,15 @@
 package org.apache.zeppelin.rest.message;
 
 import com.google.gson.Gson;
-
 import org.apache.zeppelin.common.JsonSerializable;
 
-/**
- * RestartInterpreter rest api request message.
- */
+/** RestartInterpreter rest api request message. */
 public class RestartInterpreterRequest implements JsonSerializable {
   private static final Gson gson = new Gson();
 
   String noteId;
 
-  public RestartInterpreterRequest() {
-  }
+  public RestartInterpreterRequest() {}
 
   public String getNoteId() {
     return noteId;

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