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michaelo pushed a commit to branch maven-3.8.x
in repository https://gitbox.apache.org/repos/asf/maven.git


The following commit(s) were added to refs/heads/maven-3.8.x by this push:
     new a659ade  [MNG-6827] Replace deprecated StringUtils#defaultString() 
from Plexus Utils
a659ade is described below

commit a659ade9a0ec831137d1ba415a76cc467c6e0f01
Author: Artem Krosheninnikov <[email protected]>
AuthorDate: Tue Dec 17 11:30:28 2019 +0300

    [MNG-6827] Replace deprecated StringUtils#defaultString() from Plexus Utils
    
    This closes #302
---
 .../org/apache/maven/artifact/testutils/TestFileManager.java  |  3 +--
 .../plugin/internal/DefaultPluginDependenciesResolver.java    | 11 ++++++-----
 .../maven/project/DefaultProjectDependenciesResolver.java     | 11 ++++++-----
 .../apache/maven/model/validation/DefaultModelValidator.java  |  7 ++++---
 4 files changed, 17 insertions(+), 15 deletions(-)

diff --git 
a/maven-compat/src/test/java/org/apache/maven/artifact/testutils/TestFileManager.java
 
b/maven-compat/src/test/java/org/apache/maven/artifact/testutils/TestFileManager.java
index 3cadd29..01a1f17 100644
--- 
a/maven-compat/src/test/java/org/apache/maven/artifact/testutils/TestFileManager.java
+++ 
b/maven-compat/src/test/java/org/apache/maven/artifact/testutils/TestFileManager.java
@@ -44,9 +44,8 @@ import java.util.ArrayList;
 import java.util.Iterator;
 import java.util.List;
 
-import junit.framework.Assert;
-
 import org.codehaus.plexus.util.FileUtils;
+import org.junit.Assert;
 
 public class TestFileManager
 {
diff --git 
a/maven-core/src/main/java/org/apache/maven/plugin/internal/DefaultPluginDependenciesResolver.java
 
b/maven-core/src/main/java/org/apache/maven/plugin/internal/DefaultPluginDependenciesResolver.java
index 808c09d..8d16c61 100644
--- 
a/maven-core/src/main/java/org/apache/maven/plugin/internal/DefaultPluginDependenciesResolver.java
+++ 
b/maven-core/src/main/java/org/apache/maven/plugin/internal/DefaultPluginDependenciesResolver.java
@@ -23,6 +23,7 @@ import java.util.Collection;
 import java.util.LinkedHashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 import org.apache.maven.RepositoryUtils;
 import org.apache.maven.model.Dependency;
@@ -258,7 +259,7 @@ public class DefaultPluginDependenciesResolver
                 {
                     final String premanagedScope = 
DependencyManagerUtils.getPremanagedScope( node );
                     buffer.append( " (scope managed from " );
-                    buffer.append( StringUtils.defaultString( premanagedScope, 
"default" ) );
+                    buffer.append( Objects.toString( premanagedScope, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -266,7 +267,7 @@ public class DefaultPluginDependenciesResolver
                 {
                     final String premanagedVersion = 
DependencyManagerUtils.getPremanagedVersion( node );
                     buffer.append( " (version managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedVersion, "default" ) );
+                    buffer.append( Objects.toString( premanagedVersion, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -274,7 +275,7 @@ public class DefaultPluginDependenciesResolver
                 {
                     final Boolean premanagedOptional = 
DependencyManagerUtils.getPremanagedOptional( node );
                     buffer.append( " (optionality managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedOptional, "default" ) );
+                    buffer.append( Objects.toString( premanagedOptional, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -285,7 +286,7 @@ public class DefaultPluginDependenciesResolver
                         DependencyManagerUtils.getPremanagedExclusions( node );
 
                     buffer.append( " (exclusions managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedExclusions, "default" ) );
+                    buffer.append( Objects.toString( premanagedExclusions, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -296,7 +297,7 @@ public class DefaultPluginDependenciesResolver
                         DependencyManagerUtils.getPremanagedProperties( node );
 
                     buffer.append( " (properties managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedProperties, "default" ) );
+                    buffer.append( Objects.toString( premanagedProperties, 
"default" ) );
                     buffer.append( ')' );
                 }
             }
diff --git 
a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectDependenciesResolver.java
 
b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectDependenciesResolver.java
index 0409fb8..7500e43 100644
--- 
a/maven-core/src/main/java/org/apache/maven/project/DefaultProjectDependenciesResolver.java
+++ 
b/maven-core/src/main/java/org/apache/maven/project/DefaultProjectDependenciesResolver.java
@@ -23,6 +23,7 @@ import java.util.Collection;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 
 import org.apache.maven.RepositoryUtils;
 import org.apache.maven.artifact.Artifact;
@@ -269,7 +270,7 @@ public class DefaultProjectDependenciesResolver
                 {
                     final String premanagedScope = 
DependencyManagerUtils.getPremanagedScope( node );
                     buffer.append( " (scope managed from " );
-                    buffer.append( StringUtils.defaultString( premanagedScope, 
"default" ) );
+                    buffer.append( Objects.toString( premanagedScope, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -277,7 +278,7 @@ public class DefaultProjectDependenciesResolver
                 {
                     final String premanagedVersion = 
DependencyManagerUtils.getPremanagedVersion( node );
                     buffer.append( " (version managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedVersion, "default" ) );
+                    buffer.append( Objects.toString( premanagedVersion, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -285,7 +286,7 @@ public class DefaultProjectDependenciesResolver
                 {
                     final Boolean premanagedOptional = 
DependencyManagerUtils.getPremanagedOptional( node );
                     buffer.append( " (optionality managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedOptional, "default" ) );
+                    buffer.append( Objects.toString( premanagedOptional, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -296,7 +297,7 @@ public class DefaultProjectDependenciesResolver
                         DependencyManagerUtils.getPremanagedExclusions( node );
 
                     buffer.append( " (exclusions managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedExclusions, "default" ) );
+                    buffer.append( Objects.toString( premanagedExclusions, 
"default" ) );
                     buffer.append( ')' );
                 }
 
@@ -307,7 +308,7 @@ public class DefaultProjectDependenciesResolver
                         DependencyManagerUtils.getPremanagedProperties( node );
 
                     buffer.append( " (properties managed from " );
-                    buffer.append( StringUtils.defaultString( 
premanagedProperties, "default" ) );
+                    buffer.append( Objects.toString( premanagedProperties, 
"default" ) );
                     buffer.append( ')' );
                 }
             }
diff --git 
a/maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java
 
b/maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java
index cfa6e20..ad7e3c7 100644
--- 
a/maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java
+++ 
b/maven-model-builder/src/main/java/org/apache/maven/model/validation/DefaultModelValidator.java
@@ -53,6 +53,7 @@ import java.util.HashMap;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Map;
+import java.util.Objects;
 import java.util.Set;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -527,12 +528,12 @@ public class DefaultModelValidator
                 if ( equals( existing.getVersion(), dependency.getVersion() ) )
                 {
                     msg = "duplicate declaration of version "
-                        + StringUtils.defaultString( dependency.getVersion(), 
"(?)" );
+                        + Objects.toString( dependency.getVersion(), "(?)" );
                 }
                 else
                 {
-                    msg = "version " + StringUtils.defaultString( 
existing.getVersion(), "(?)" ) + " vs "
-                        + StringUtils.defaultString( dependency.getVersion(), 
"(?)" );
+                    msg = "version " + Objects.toString( 
existing.getVersion(), "(?)" ) + " vs "
+                        + Objects.toString( dependency.getVersion(), "(?)" );
                 }
 
                 addViolation( problems, errOn31, Version.V20, prefix + prefix2 
+ "(groupId:artifactId:type:classifier)",

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