prefer StringBuilder to StringBuffer

git-svn-id: https://svn.apache.org/repos/asf/maven/plugins/trunk@1331448 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/src/main/java/org/apache/maven/plugin/AbstractCompilerMojo.java b/src/main/java/org/apache/maven/plugin/AbstractCompilerMojo.java
index 180ee16..f715446 100644
--- a/src/main/java/org/apache/maven/plugin/AbstractCompilerMojo.java
+++ b/src/main/java/org/apache/maven/plugin/AbstractCompilerMojo.java
@@ -593,7 +593,7 @@
                 String[] cl = compiler.createCommandLine( compilerConfiguration );
                 if ( cl != null && cl.length > 0 )
                 {
-                    StringBuffer sb = new StringBuffer();
+                    StringBuilder sb = new StringBuilder();
                     sb.append( cl[0] );
                     for ( int i = 1; i < cl.length; i++ )
                     {
diff --git a/src/main/java/org/apache/maven/plugin/CompilationFailureException.java b/src/main/java/org/apache/maven/plugin/CompilationFailureException.java
index c8a51f5..9f2762c 100644
--- a/src/main/java/org/apache/maven/plugin/CompilationFailureException.java
+++ b/src/main/java/org/apache/maven/plugin/CompilationFailureException.java
@@ -41,7 +41,7 @@
 
     public static String longMessage( List<CompilerError> messages )
     {
-        StringBuffer sb = new StringBuffer();
+        StringBuilder sb = new StringBuilder();
 
         if ( messages != null )
         {