http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/options/OptionsHandler.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/options/OptionsHandler.java 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/options/OptionsHandler.java
index c643115..42628b2 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/options/OptionsHandler.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/options/OptionsHandler.java
@@ -20,7 +20,6 @@ package com.yahoo.labs.samoa.moa.options;
  * #L%
  */
 
-
 import java.util.HashMap;
 import com.github.javacliparser.JavaCLIParser;
 import com.github.javacliparser.Option;
@@ -34,169 +33,151 @@ import com.yahoo.labs.samoa.moa.tasks.TaskMonitor;
  */
 
 /**
- *
+ * 
  * @author abifet
  */
 public class OptionsHandler extends JavaCLIParser {
 
-    //public Object handler;
-    
-    public OptionsHandler(Object c, String cliString) {
-        super(c,cliString);
-        //this.handler = c;
-        //this.prepareForUse();
-        /*int firstSpaceIndex = cliString.indexOf(' ', 0);
-        String classOptions;
-        String className;
-        if (firstSpaceIndex > 0) {
-            className = cliString.substring(0, firstSpaceIndex);
-            classOptions = cliString.substring(firstSpaceIndex + 1, 
cliString.length());
-            classOptions = classOptions.trim();
-        } else {
-            className = cliString;
-            classOptions = "";
-        }*/
-        //options.setViaCLIString(cliString);
-    }
-    
-    
-    //private static final long serialVersionUID = 1L;
-
-    /** Options to handle */
-    //protected Options options;
-
-    /** Dictionary with option texts and objects */
-    //protected Map<String, Object> classOptionNamesToPreparedObjects;
-
-
-    /*public String getPurposeString() {
-        return "Anonymous object: purpose undocumented.";
-    }
-
-    public Options getOptions() {
-        if (this.options == null) {
-            this.options = new Options();
-            Option[] myOptions = discoverOptionsViaReflection();
-            for (Option option : myOptions) {
-                this.options.addOption(option);
-            }
-        }
-        return this.options;
-    }*/
-
-    public void prepareForUse() {
-        prepareForUse(new NullMonitor(), null);
-    }
-
-    public void prepareForUse(TaskMonitor monitor, ObjectRepository 
repository) {
-        prepareClassOptions(monitor, repository);
-        //prepareForUseImpl(monitor, repository);
-    }
-
-    /**
-     * This method describes the implementation of how to prepare this object 
for use.
-     * All classes that extends this class have to implement 
<code>prepareForUseImpl</code>
-     * and not <code>prepareForUse</code> since
-     * <code>prepareForUse</code> calls <code>prepareForUseImpl</code>.
-     *
-     * @param monitor the TaskMonitor to use
-     * @param repository  the ObjectRepository to use
+  // public Object handler;
+
+  public OptionsHandler(Object c, String cliString) {
+    super(c, cliString);
+    // this.handler = c;
+    // this.prepareForUse();
+    /*
+     * int firstSpaceIndex = cliString.indexOf(' ', 0); String classOptions;
+     * String className; if (firstSpaceIndex > 0) { className =
+     * cliString.substring(0, firstSpaceIndex); classOptions =
+     * cliString.substring(firstSpaceIndex + 1, cliString.length());
+     * classOptions = classOptions.trim(); } else { className = cliString;
+     * classOptions = ""; }
      */
-    //protected abstract void prepareForUseImpl(TaskMonitor monitor,
-      //      ObjectRepository repository);
-
-    /* public String getCLICreationString(Class<?> expectedType) {
-        return ClassOption.stripPackagePrefix(this.getClass().getName(),
-                expectedType)
-                + " " + getOptions().getAsCLIString();
-    }*/
-
-
-    /**
-     * Gets the options of this class via reflection.
-     *
-     * @return an array of options
-     */
-    /*public Option[] discoverOptionsViaReflection() {
-        //Class<? extends AbstractOptionHandler> c = this.getClass();
-        Class c = this.handler.getClass();
-        Field[] fields = c.getFields();
-        List<Option> optList = new LinkedList<Option>();
-        for (Field field : fields) {
-            String fName = field.getName();
-            Class<?> fType = field.getType();
-            if (fType.getName().endsWith("Option")) {
-                if (Option.class.isAssignableFrom(fType)) {
-                    Option oVal = null;
-                    try {
-                        field.setAccessible(true);
-                        oVal = (Option) field.get(this.handler);
-                    } catch (IllegalAccessException ignored) {
-                        // cannot access this field
-                    }
-                    if (oVal != null) {
-                        optList.add(oVal);
-                    }
-                }
-            }
+    // options.setViaCLIString(cliString);
+  }
+
+  // private static final long serialVersionUID = 1L;
+
+  /** Options to handle */
+  // protected Options options;
+
+  /** Dictionary with option texts and objects */
+  // protected Map<String, Object> classOptionNamesToPreparedObjects;
+
+  /*
+   * public String getPurposeString() { return
+   * "Anonymous object: purpose undocumented."; }
+   * 
+   * public Options getOptions() { if (this.options == null) { this.options =
+   * new Options(); Option[] myOptions = discoverOptionsViaReflection(); for
+   * (Option option : myOptions) { this.options.addOption(option); } } return
+   * this.options; }
+   */
+
+  public void prepareForUse() {
+    prepareForUse(new NullMonitor(), null);
+  }
+
+  public void prepareForUse(TaskMonitor monitor, ObjectRepository repository) {
+    prepareClassOptions(monitor, repository);
+    // prepareForUseImpl(monitor, repository);
+  }
+
+  /**
+   * This method describes the implementation of how to prepare this object for
+   * use. All classes that extends this class have to implement
+   * <code>prepareForUseImpl</code> and not <code>prepareForUse</code> since
+   * <code>prepareForUse</code> calls <code>prepareForUseImpl</code>.
+   * 
+   * @param monitor
+   *          the TaskMonitor to use
+   * @param repository
+   *          the ObjectRepository to use
+   */
+  // protected abstract void prepareForUseImpl(TaskMonitor monitor,
+  // ObjectRepository repository);
+
+  /*
+   * public String getCLICreationString(Class<?> expectedType) { return
+   * ClassOption.stripPackagePrefix(this.getClass().getName(), expectedType) +
+   * " " + getOptions().getAsCLIString(); }
+   */
+
+  /**
+   * Gets the options of this class via reflection.
+   * 
+   * @return an array of options
+   */
+  /*
+   * public Option[] discoverOptionsViaReflection() { //Class<? extends
+   * AbstractOptionHandler> c = this.getClass(); Class c =
+   * this.handler.getClass(); Field[] fields = c.getFields(); List<Option>
+   * optList = new LinkedList<Option>(); for (Field field : fields) { String
+   * fName = field.getName(); Class<?> fType = field.getType(); if
+   * (fType.getName().endsWith("Option")) { if
+   * (Option.class.isAssignableFrom(fType)) { Option oVal = null; try {
+   * field.setAccessible(true); oVal = (Option) field.get(this.handler); } 
catch
+   * (IllegalAccessException ignored) { // cannot access this field } if (oVal
+   * != null) { optList.add(oVal); } } } } return optList.toArray(new
+   * Option[optList.size()]); }
+   */
+
+  /**
+   * Prepares the options of this class.
+   * 
+   * @param monitor
+   *          the TaskMonitor to use
+   * @param repository
+   *          the ObjectRepository to use
+   */
+  public void prepareClassOptions(TaskMonitor monitor,
+      ObjectRepository repository) {
+    this.classOptionNamesToPreparedObjects = null;
+    Option[] optionArray = getOptions().getOptionArray();
+    for (Option option : optionArray) {
+      if (option instanceof ClassOption) {
+        ClassOption classOption = (ClassOption) option;
+        monitor.setCurrentActivity("Materializing option "
+            + classOption.getName() + "...", -1.0);
+        Object optionObj = classOption.materializeObject(monitor,
+            repository);
+        if (monitor.taskShouldAbort()) {
+          return;
         }
-        return optList.toArray(new Option[optList.size()]);
-    }*/
-    
-    /**
-     * Prepares the options of this class.
-     * 
-     * @param monitor the TaskMonitor to use
-     * @param repository  the ObjectRepository to use
-     */
-    public void prepareClassOptions(TaskMonitor monitor,
-            ObjectRepository repository) {
-        this.classOptionNamesToPreparedObjects = null;
-        Option[] optionArray = getOptions().getOptionArray();
-        for (Option option : optionArray) {
-            if (option instanceof ClassOption) {
-                ClassOption classOption = (ClassOption) option;
-                monitor.setCurrentActivity("Materializing option "
-                        + classOption.getName() + "...", -1.0);
-                Object optionObj = classOption.materializeObject(monitor,
-                        repository);
-                if (monitor.taskShouldAbort()) {
-                    return;
-                }
-                if (optionObj instanceof OptionHandler) {
-                    monitor.setCurrentActivity("Preparing option "
-                            + classOption.getName() + "...", -1.0);
-                    ((OptionHandler) optionObj).prepareForUse(monitor,
-                            repository);
-                    if (monitor.taskShouldAbort()) {
-                        return;
-                    }
-                }
-                if (this.classOptionNamesToPreparedObjects == null) {
-                    this.classOptionNamesToPreparedObjects = new 
HashMap<String, Object>();
-                }
-                this.classOptionNamesToPreparedObjects.put(option.getName(),
-                        optionObj);
-            }
+        if (optionObj instanceof OptionHandler) {
+          monitor.setCurrentActivity("Preparing option "
+              + classOption.getName() + "...", -1.0);
+          ((OptionHandler) optionObj).prepareForUse(monitor,
+              repository);
+          if (monitor.taskShouldAbort()) {
+            return;
+          }
         }
-    }
-
-    /**
-     *  Gets a prepared option of this class.
-     *
-     * @param opt the class option to get
-     * @return an option stored in the dictionary
-     */
-    public Object getPreparedClassOption(ClassOption opt) {
         if (this.classOptionNamesToPreparedObjects == null) {
-                    this.prepareForUse();
-                }
-        return this.classOptionNamesToPreparedObjects.get(opt.getName());
+          this.classOptionNamesToPreparedObjects = new HashMap<String, 
Object>();
+        }
+        this.classOptionNamesToPreparedObjects.put(option.getName(),
+            optionObj);
+      }
+    }
+  }
+
+  /**
+   * Gets a prepared option of this class.
+   * 
+   * @param opt
+   *          the class option to get
+   * @return an option stored in the dictionary
+   */
+  public Object getPreparedClassOption(ClassOption opt) {
+    if (this.classOptionNamesToPreparedObjects == null) {
+      this.prepareForUse();
     }
+    return this.classOptionNamesToPreparedObjects.get(opt.getName());
+  }
+
+  // @Override
+  // public void getDescription(StringBuilder sb, int i) {
+  // throw new UnsupportedOperationException("Not supported yet.");
+  // }
 
-    //@Override
-    //public void getDescription(StringBuilder sb, int i) {
-    //    throw new UnsupportedOperationException("Not supported yet.");
-    //}
-    
 }

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ArffFileStream.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ArffFileStream.java 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ArffFileStream.java
index aa2717d..0edd48f 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ArffFileStream.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ArffFileStream.java
@@ -39,161 +39,161 @@ import com.yahoo.labs.samoa.moa.tasks.TaskMonitor;
 
 /**
  * Stream reader of ARFF files.
- *
+ * 
  * @author Richard Kirkby ([email protected])
  * @version $Revision: 7 $
  */
 public class ArffFileStream extends AbstractOptionHandler implements 
InstanceStream {
 
-    @Override
-    public String getPurposeString() {
-        return "A stream read from an ARFF file.";
-    }
+  @Override
+  public String getPurposeString() {
+    return "A stream read from an ARFF file.";
+  }
 
-    private static final long serialVersionUID = 1L;
+  private static final long serialVersionUID = 1L;
 
-    public FileOption arffFileOption = new FileOption("arffFile", 'f',
-            "ARFF file to load.", null, "arff", false);
+  public FileOption arffFileOption = new FileOption("arffFile", 'f',
+      "ARFF file to load.", null, "arff", false);
 
-    public IntOption classIndexOption = new IntOption(
-            "classIndex",
-            'c',
-            "Class index of data. 0 for none or -1 for last attribute in 
file.",
-            -1, -1, Integer.MAX_VALUE);
+  public IntOption classIndexOption = new IntOption(
+      "classIndex",
+      'c',
+      "Class index of data. 0 for none or -1 for last attribute in file.",
+      -1, -1, Integer.MAX_VALUE);
 
-    protected Instances instances;
+  protected Instances instances;
 
-    transient protected Reader fileReader;
+  transient protected Reader fileReader;
 
-    protected boolean hitEndOfFile;
+  protected boolean hitEndOfFile;
 
-    protected InstanceExample lastInstanceRead;
+  protected InstanceExample lastInstanceRead;
 
-    protected int numInstancesRead;
+  protected int numInstancesRead;
 
-    transient protected InputStreamProgressMonitor fileProgressMonitor;
-    
-    protected boolean hasStarted;
+  transient protected InputStreamProgressMonitor fileProgressMonitor;
 
-    public ArffFileStream() {
-    }
+  protected boolean hasStarted;
 
-    public ArffFileStream(String arffFileName, int classIndex) {
-        this.arffFileOption.setValue(arffFileName);
-        this.classIndexOption.setValue(classIndex);
-        this.hasStarted = false;
-        restart();
-    }
+  public ArffFileStream() {
+  }
 
-    @Override
-    public void prepareForUseImpl(TaskMonitor monitor,
-            ObjectRepository repository) {
-        //restart();
-        this.hasStarted = false;
-        this.lastInstanceRead = null;
-    }
+  public ArffFileStream(String arffFileName, int classIndex) {
+    this.arffFileOption.setValue(arffFileName);
+    this.classIndexOption.setValue(classIndex);
+    this.hasStarted = false;
+    restart();
+  }
 
-    @Override
-    public InstancesHeader getHeader() {
-        return new InstancesHeader(this.instances);
-    }
+  @Override
+  public void prepareForUseImpl(TaskMonitor monitor,
+      ObjectRepository repository) {
+    // restart();
+    this.hasStarted = false;
+    this.lastInstanceRead = null;
+  }
 
-    @Override
-    public long estimatedRemainingInstances() {
-        double progressFraction = 
this.fileProgressMonitor.getProgressFraction();
-        if ((progressFraction > 0.0) && (this.numInstancesRead > 0)) {
-            return (long) ((this.numInstancesRead / progressFraction) - 
this.numInstancesRead);
-        }
-        return -1;
-    }
+  @Override
+  public InstancesHeader getHeader() {
+    return new InstancesHeader(this.instances);
+  }
 
-    @Override
-    public boolean hasMoreInstances() {
-        return !this.hitEndOfFile;
+  @Override
+  public long estimatedRemainingInstances() {
+    double progressFraction = this.fileProgressMonitor.getProgressFraction();
+    if ((progressFraction > 0.0) && (this.numInstancesRead > 0)) {
+      return (long) ((this.numInstancesRead / progressFraction) - 
this.numInstancesRead);
     }
-
-    @Override
-    public InstanceExample nextInstance() {
-        if (this.lastInstanceRead == null) {
-            readNextInstanceFromFile();
-        }
-        InstanceExample prevInstance = this.lastInstanceRead;
-        this.hitEndOfFile = !readNextInstanceFromFile();
-        return prevInstance;
+    return -1;
+  }
+
+  @Override
+  public boolean hasMoreInstances() {
+    return !this.hitEndOfFile;
+  }
+
+  @Override
+  public InstanceExample nextInstance() {
+    if (this.lastInstanceRead == null) {
+      readNextInstanceFromFile();
     }
-
-    @Override
-    public boolean isRestartable() {
-        return true;
+    InstanceExample prevInstance = this.lastInstanceRead;
+    this.hitEndOfFile = !readNextInstanceFromFile();
+    return prevInstance;
+  }
+
+  @Override
+  public boolean isRestartable() {
+    return true;
+  }
+
+  @Override
+  public void restart() {
+    try {
+      reset();
+      // this.hitEndOfFile = !readNextInstanceFromFile();
+    } catch (IOException ioe) {
+      throw new RuntimeException("ArffFileStream restart failed.", ioe);
     }
-
-    @Override
-    public void restart() {
-        try {
-            reset();
-            //this.hitEndOfFile = !readNextInstanceFromFile();
-        } catch (IOException ioe) {
-            throw new RuntimeException("ArffFileStream restart failed.", ioe);
-        }
+  }
+
+  protected boolean readNextInstanceFromFile() {
+    boolean ret;
+    if (!this.hasStarted) {
+      try {
+        reset();
+        ret = getNextInstanceFromFile();
+        this.hitEndOfFile = !ret;
+      } catch (IOException ioe) {
+        throw new RuntimeException("ArffFileStream restart failed.", ioe);
+      }
+      this.hasStarted = true;
+    } else {
+      ret = getNextInstanceFromFile();
     }
+    return ret;
+  }
 
-    protected boolean readNextInstanceFromFile() {
-        boolean ret;
-        if (!this.hasStarted){
-            try {
-                reset();
-                ret = getNextInstanceFromFile();
-                this.hitEndOfFile = !ret;
-            } catch (IOException ioe) {
-                throw new RuntimeException("ArffFileStream restart failed.", 
ioe);
-            }
-            this.hasStarted = true;
-        } else {
-            ret = getNextInstanceFromFile();
-        }
-        return ret;
-    }
+  @Override
+  public void getDescription(StringBuilder sb, int indent) {
+    // TODO Auto-generated method stub
+  }
 
-    @Override
-    public void getDescription(StringBuilder sb, int indent) {
-        // TODO Auto-generated method stub
+  private void reset() throws IOException {
+    if (this.fileReader != null) {
+      this.fileReader.close();
     }
-
-    private void reset() throws IOException {
-        if (this.fileReader != null) {
-            this.fileReader.close();
-        }
-        InputStream fileStream = new 
FileInputStream(this.arffFileOption.getFile());
-        this.fileProgressMonitor = new InputStreamProgressMonitor(
-                fileStream);
-        this.fileReader = new BufferedReader(new InputStreamReader(
-                this.fileProgressMonitor));
-        this.instances = new Instances(this.fileReader, 1, 
this.classIndexOption.getValue());
-        if (this.classIndexOption.getValue() < 0) {
-            this.instances.setClassIndex(this.instances.numAttributes() - 1);
-        } else if (this.classIndexOption.getValue() > 0) {
-            this.instances.setClassIndex(this.classIndexOption.getValue() - 1);
-        }
-        this.numInstancesRead = 0;
-        this.lastInstanceRead = null;
+    InputStream fileStream = new 
FileInputStream(this.arffFileOption.getFile());
+    this.fileProgressMonitor = new InputStreamProgressMonitor(
+        fileStream);
+    this.fileReader = new BufferedReader(new InputStreamReader(
+        this.fileProgressMonitor));
+    this.instances = new Instances(this.fileReader, 1, 
this.classIndexOption.getValue());
+    if (this.classIndexOption.getValue() < 0) {
+      this.instances.setClassIndex(this.instances.numAttributes() - 1);
+    } else if (this.classIndexOption.getValue() > 0) {
+      this.instances.setClassIndex(this.classIndexOption.getValue() - 1);
     }
-
-    private boolean getNextInstanceFromFile() throws RuntimeException {
-        try {
-            if (this.instances.readInstance(this.fileReader)) {
-                this.lastInstanceRead = new 
InstanceExample(this.instances.instance(0));
-                this.instances.delete(); // keep instances clean
-                this.numInstancesRead++;
-                return true;
-            }
-            if (this.fileReader != null) {
-                this.fileReader.close();
-                this.fileReader = null;
-            }
-            return false;
-        } catch (IOException ioe) {
-            throw new RuntimeException(
-                    "ArffFileStream failed to read instance from stream.", 
ioe);
-        }
+    this.numInstancesRead = 0;
+    this.lastInstanceRead = null;
+  }
+
+  private boolean getNextInstanceFromFile() throws RuntimeException {
+    try {
+      if (this.instances.readInstance(this.fileReader)) {
+        this.lastInstanceRead = new 
InstanceExample(this.instances.instance(0));
+        this.instances.delete(); // keep instances clean
+        this.numInstancesRead++;
+        return true;
+      }
+      if (this.fileReader != null) {
+        this.fileReader.close();
+        this.fileReader = null;
+      }
+      return false;
+    } catch (IOException ioe) {
+      throw new RuntimeException(
+          "ArffFileStream failed to read instance from stream.", ioe);
     }
+  }
 }

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ExampleStream.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ExampleStream.java 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ExampleStream.java
index dbdeba3..471d83c 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ExampleStream.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/ExampleStream.java
@@ -25,55 +25,54 @@ import com.yahoo.labs.samoa.moa.MOAObject;
 import com.yahoo.labs.samoa.moa.core.Example;
 
 /**
- * Interface representing a data stream of examples. 
- *
+ * Interface representing a data stream of examples.
+ * 
  * @author Richard Kirkby ([email protected])
- * @version $Revision: 7 $ 
+ * @version $Revision: 7 $
  */
 public interface ExampleStream<E extends Example> extends MOAObject {
 
-    /**
-     * Gets the header of this stream.
-     * This is useful to know attributes and classes.
-     * InstancesHeader is an extension of weka.Instances.
-     *
-     * @return the header of this stream
-     */
-    public InstancesHeader getHeader();
+  /**
+   * Gets the header of this stream. This is useful to know attributes and
+   * classes. InstancesHeader is an extension of weka.Instances.
+   * 
+   * @return the header of this stream
+   */
+  public InstancesHeader getHeader();
 
-    /**
-     * Gets the estimated number of remaining instances in this stream
-     *
-     * @return the estimated number of instances to get from this stream
-     */
-    public long estimatedRemainingInstances();
+  /**
+   * Gets the estimated number of remaining instances in this stream
+   * 
+   * @return the estimated number of instances to get from this stream
+   */
+  public long estimatedRemainingInstances();
 
-    /**
-     * Gets whether this stream has more instances to output.
-     * This is useful when reading streams from files.
-     *
-     * @return true if this stream has more instances to output
-     */
-    public boolean hasMoreInstances();
+  /**
+   * Gets whether this stream has more instances to output. This is useful when
+   * reading streams from files.
+   * 
+   * @return true if this stream has more instances to output
+   */
+  public boolean hasMoreInstances();
 
-    /**
-     * Gets the next example from this stream.
-     *
-     * @return the next example of this stream
-     */
-    public E nextInstance();
+  /**
+   * Gets the next example from this stream.
+   * 
+   * @return the next example of this stream
+   */
+  public E nextInstance();
 
-    /**
-     * Gets whether this stream can restart.
-     *
-     * @return true if this stream can restart
-     */
-    public boolean isRestartable();
+  /**
+   * Gets whether this stream can restart.
+   * 
+   * @return true if this stream can restart
+   */
+  public boolean isRestartable();
 
-    /**
-     * Restarts this stream. It must be similar to
-     * starting a new stream from scratch.
-     *
-     */
-    public void restart();
+  /**
+   * Restarts this stream. It must be similar to starting a new stream from
+   * scratch.
+   * 
+   */
+  public void restart();
 }

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/InstanceStream.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/InstanceStream.java 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/InstanceStream.java
index 1166e81..30289bd 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/InstanceStream.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/InstanceStream.java
@@ -24,14 +24,11 @@ import com.yahoo.labs.samoa.moa.core.Example;
 import com.yahoo.labs.samoa.instances.Instance;
 
 /**
- * Interface representing a data stream of instances. 
- *
+ * Interface representing a data stream of instances.
+ * 
  * @author Richard Kirkby ([email protected])
- * @version $Revision: 7 $ 
+ * @version $Revision: 7 $
  */
 public interface InstanceStream extends ExampleStream<Example<Instance>> {
 
-
-
-
 }

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEvent.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEvent.java
 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEvent.java
index 7062d99..1bada9d 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEvent.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEvent.java
@@ -1,4 +1,3 @@
-
 package com.yahoo.labs.samoa.moa.streams.clustering;
 
 /*
@@ -36,15 +35,15 @@ public class ClusterEvent extends EventObject {
     this.timestamp = timestamp;
   }
 
-  public String getMessage(){
-      return message;
+  public String getMessage() {
+    return message;
   }
 
-  public long getTimestamp(){
-      return timestamp;
+  public long getTimestamp() {
+    return timestamp;
   }
 
-  public String getType(){
-      return type;
+  public String getType() {
+    return type;
   }
 }

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEventListener.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEventListener.java
 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEventListener.java
index ff05afd..07d9aca 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEventListener.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusterEventListener.java
@@ -1,4 +1,3 @@
-
 package com.yahoo.labs.samoa.moa.streams.clustering;
 
 /*
@@ -28,4 +27,3 @@ public interface ClusterEventListener extends EventListener {
   public void changeCluster(ClusterEvent e);
 
 }
-

http://git-wip-us.apache.org/repos/asf/incubator-samoa/blob/23a35dbe/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusteringStream.java
----------------------------------------------------------------------
diff --git 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusteringStream.java
 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusteringStream.java
index 6e38348..3db9ec6 100644
--- 
a/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusteringStream.java
+++ 
b/samoa-api/src/main/java/com/yahoo/labs/samoa/moa/streams/clustering/ClusteringStream.java
@@ -1,4 +1,3 @@
-
 package com.yahoo.labs.samoa.moa.streams.clustering;
 
 /*
@@ -26,30 +25,29 @@ import com.github.javacliparser.FloatOption;
 import com.github.javacliparser.IntOption;
 import com.yahoo.labs.samoa.moa.streams.InstanceStream;
 
-public abstract class ClusteringStream extends AbstractOptionHandler 
implements InstanceStream{
-    public IntOption decayHorizonOption = new IntOption("decayHorizon", 'h',
-                    "Decay horizon", 1000, 0, Integer.MAX_VALUE);
-
-    public FloatOption decayThresholdOption = new 
FloatOption("decayThreshold", 't',
-                    "Decay horizon threshold", 0.01, 0, 1);
+public abstract class ClusteringStream extends AbstractOptionHandler 
implements InstanceStream {
+  public IntOption decayHorizonOption = new IntOption("decayHorizon", 'h',
+      "Decay horizon", 1000, 0, Integer.MAX_VALUE);
 
-    public IntOption evaluationFrequencyOption = new 
IntOption("evaluationFrequency", 'e',
-                    "Evaluation frequency", 1000, 0, Integer.MAX_VALUE);
+  public FloatOption decayThresholdOption = new FloatOption("decayThreshold", 
't',
+      "Decay horizon threshold", 0.01, 0, 1);
 
-    public IntOption numAttsOption = new IntOption("numAtts", 'a',
-                    "The number of attributes to generate.", 2, 0, 
Integer.MAX_VALUE);
+  public IntOption evaluationFrequencyOption = new 
IntOption("evaluationFrequency", 'e',
+      "Evaluation frequency", 1000, 0, Integer.MAX_VALUE);
 
-    public int getDecayHorizon(){
-        return decayHorizonOption.getValue();
-    }
+  public IntOption numAttsOption = new IntOption("numAtts", 'a',
+      "The number of attributes to generate.", 2, 0, Integer.MAX_VALUE);
 
-    public double getDecayThreshold(){
-        return decayThresholdOption.getValue();
-    }
+  public int getDecayHorizon() {
+    return decayHorizonOption.getValue();
+  }
 
-    public int getEvaluationFrequency(){
-        return evaluationFrequencyOption.getValue();
-    }
+  public double getDecayThreshold() {
+    return decayThresholdOption.getValue();
+  }
 
+  public int getEvaluationFrequency() {
+    return evaluationFrequencyOption.getValue();
+  }
 
 }

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