diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/FileNameMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/FileNameMapper.java
index f54f0f10e..023e95303 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/FileNameMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/FileNameMapper.java
@@ -23,7 +23,6 @@ import org.apache.myrmidon.api.TaskException;
  */
 public interface FileNameMapper
 {
-
     /**
      * Sets the from part of the transformation rule.
      *
diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/FlatFileNameMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/FlatFileNameMapper.java
index ab7c3ea43..46089cbb0 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/FlatFileNameMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/FlatFileNameMapper.java
@@ -7,6 +7,8 @@
  */
 package org.apache.tools.ant.util;
 
+import java.io.File;
+
 /**
  * Implementation of FileNameMapper that always returns the source file name
  * without any leading directory information. <p>
@@ -16,24 +18,20 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class FlatFileNameMapper implements FileNameMapper
+public class FlatFileNameMapper
+    implements FileNameMapper
 {
-
     /**
      * Ignored.
-     *
-     * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
     }
 
     /**
      * Ignored.
-     *
-     * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
     }
 
@@ -44,8 +42,8 @@ public class FlatFileNameMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        return new String[]{new java.io.File( sourceFileName ).getName()};
+        return new String[]{new File( sourceFileName ).getName()};
     }
 }
diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/GlobPatternMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/GlobPatternMapper.java
index 899931ec1..ab64795ad 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/GlobPatternMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/GlobPatternMapper.java
@@ -19,58 +19,59 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class GlobPatternMapper implements FileNameMapper
+public class GlobPatternMapper
+    implements FileNameMapper
 {
     /**
      * Part of &quot;from&quot; pattern before the *.
      */
-    protected String fromPrefix = null;
+    private String m_fromPrefix;
 
     /**
      * Part of &quot;from&quot; pattern after the *.
      */
-    protected String fromPostfix = null;
+    private String m_fromPostfix;
 
     /**
      * Part of &quot;to&quot; pattern before the *.
      */
-    protected String toPrefix = null;
+    private String m_toPrefix;
 
     /**
      * Part of &quot;to&quot; pattern after the *.
      */
-    protected String toPostfix = null;
+    private String m_toPostfix;
 
     /**
      * Length of the postfix (&quot;from&quot; pattern).
      */
-    protected int postfixLength;
+    private int m_postfixLength;
 
     /**
      * Length of the prefix (&quot;from&quot; pattern).
      */
-    protected int prefixLength;
+    private int m_prefixLength;
 
     /**
      * Sets the &quot;from&quot; pattern. Required.
      *
      * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
-        int index = from.lastIndexOf( "*" );
+        final int index = from.lastIndexOf( "*" );
         if( index == -1 )
         {
-            fromPrefix = from;
-            fromPostfix = "";
+            m_fromPrefix = from;
+            m_fromPostfix = "";
         }
         else
         {
-            fromPrefix = from.substring( 0, index );
-            fromPostfix = from.substring( index + 1 );
+            m_fromPrefix = from.substring( 0, index );
+            m_fromPostfix = from.substring( index + 1 );
         }
-        prefixLength = fromPrefix.length();
-        postfixLength = fromPostfix.length();
+        m_prefixLength = m_fromPrefix.length();
+        m_postfixLength = m_fromPostfix.length();
     }
 
     /**
@@ -78,18 +79,18 @@ public class GlobPatternMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
-        int index = to.lastIndexOf( "*" );
+        final int index = to.lastIndexOf( "*" );
         if( index == -1 )
         {
-            toPrefix = to;
-            toPostfix = "";
+            m_toPrefix = to;
+            m_toPostfix = "";
         }
         else
         {
-            toPrefix = to.substring( 0, index );
-            toPostfix = to.substring( index + 1 );
+            m_toPrefix = to.substring( 0, index );
+            m_toPostfix = to.substring( index + 1 );
         }
     }
 
@@ -100,17 +101,20 @@ public class GlobPatternMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        if( fromPrefix == null
-            || !sourceFileName.startsWith( fromPrefix )
-            || !sourceFileName.endsWith( fromPostfix ) )
+        if( m_fromPrefix == null ||
+            !sourceFileName.startsWith( m_fromPrefix ) ||
+            !sourceFileName.endsWith( m_fromPostfix ) )
         {
             return null;
         }
-        return new String[]{toPrefix
-            + extractVariablePart( sourceFileName )
-            + toPostfix};
+        else
+        {
+            final String result = m_toPrefix +
+                extractVariablePart( sourceFileName ) + m_toPostfix;
+            return new String[]{result};
+        }
     }
 
     /**
@@ -120,9 +124,9 @@ public class GlobPatternMapper implements FileNameMapper
      * @param name Description of Parameter
      * @return Description of the Returned Value
      */
-    protected String extractVariablePart( String name )
+    protected String extractVariablePart( final String name )
     {
-        return name.substring( prefixLength,
-                               name.length() - postfixLength );
+        return name.substring( m_prefixLength,
+                               name.length() - m_postfixLength );
     }
 }
diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/IdentityMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/IdentityMapper.java
index 81888402e..e52e5a064 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/IdentityMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/IdentityMapper.java
@@ -15,15 +15,15 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class IdentityMapper implements FileNameMapper
+public class IdentityMapper
+    implements FileNameMapper
 {
-
     /**
      * Ignored.
      *
      * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
     }
 
@@ -32,7 +32,7 @@ public class IdentityMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
     }
 
@@ -42,7 +42,7 @@ public class IdentityMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
         return new String[]{sourceFileName};
     }
diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/MergingMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/MergingMapper.java
index 4f292eda0..8dd26869a 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/MergingMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/MergingMapper.java
@@ -15,9 +15,10 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class MergingMapper implements FileNameMapper
+public class MergingMapper
+    implements FileNameMapper
 {
-    protected String[] mergedFile = null;
+    private String[] m_mergedFile;
 
     /**
      * Ignored.
@@ -35,7 +36,7 @@ public class MergingMapper implements FileNameMapper
      */
     public void setTo( String to )
     {
-        mergedFile = new String[]{to};
+        m_mergedFile = new String[]{to};
     }
 
     /**
@@ -44,9 +45,8 @@ public class MergingMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        return mergedFile;
+        return m_mergedFile;
     }
-
 }
diff --git a/proposal/myrmidon/src/main/org/apache/tools/ant/util/RegexpPatternMapper.java b/proposal/myrmidon/src/main/org/apache/tools/ant/util/RegexpPatternMapper.java
index a44e35c7b..dd1d6fbdc 100644
--- a/proposal/myrmidon/src/main/org/apache/tools/ant/util/RegexpPatternMapper.java
+++ b/proposal/myrmidon/src/main/org/apache/tools/ant/util/RegexpPatternMapper.java
@@ -17,37 +17,34 @@ import org.apache.tools.ant.util.regexp.RegexpMatcherFactory;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class RegexpPatternMapper implements FileNameMapper
+public class RegexpPatternMapper
+    implements FileNameMapper
 {
-    protected RegexpMatcher reg = null;
-    protected char[] to = null;
-    protected StringBuffer result = new StringBuffer();
+    private RegexpMatcher m_matcher;
+    private char[] m_to;
+    private StringBuffer m_result = new StringBuffer();
 
     public RegexpPatternMapper()
         throws TaskException
     {
-        reg = ( new RegexpMatcherFactory() ).newRegexpMatcher();
+        m_matcher = ( new RegexpMatcherFactory() ).newRegexpMatcher();
     }
 
     /**
      * Sets the &quot;from&quot; pattern. Required.
-     *
-     * @param from The new From value
-     * @exception TaskException Description of Exception
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
         throws TaskException
     {
         try
         {
-            reg.setPattern( from );
+            m_matcher.setPattern( from );
         }
         catch( NoClassDefFoundError e )
         {
             // depending on the implementation the actual RE won't
             // get instantiated in the constructor.
-            throw new TaskException( "Cannot load regular expression matcher",
-                                     e );
+            throw new TaskException( "Cannot load regular expression matcher", e );
         }
     }
 
@@ -56,9 +53,9 @@ public class RegexpPatternMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
-        this.to = to.toCharArray();
+        m_to = to.toCharArray();
     }
 
     /**
@@ -68,57 +65,57 @@ public class RegexpPatternMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
         throws TaskException
     {
-        if( reg == null || to == null || !reg.matches( sourceFileName ) )
+        if( m_matcher == null || m_to == null ||
+            !m_matcher.matches( sourceFileName ) )
         {
             return null;
         }
-        return new String[]{replaceReferences( sourceFileName )};
+        else
+        {
+            return new String[]{replaceReferences( sourceFileName )};
+        }
     }
 
     /**
      * Replace all backreferences in the to pattern with the matched groups of
      * the source.
-     *
-     * @param source Description of Parameter
-     * @return Description of the Returned Value
      */
-    protected String replaceReferences( String source )
+    private String replaceReferences( final String source )
         throws TaskException
     {
-        ArrayList v = reg.getGroups( source );
+        final ArrayList groups = m_matcher.getGroups( source );
 
-        result.setLength( 0 );
-        for( int i = 0; i < to.length; i++ )
+        m_result.setLength( 0 );
+        for( int i = 0; i < m_to.length; i++ )
         {
-            if( to[ i ] == '\\' )
+            if( m_to[ i ] == '\\' )
             {
-                if( ++i < to.length )
+                if( ++i < m_to.length )
                 {
-                    int value = Character.digit( to[ i ], 10 );
+                    final int value = Character.digit( m_to[ i ], 10 );
                     if( value > -1 )
                     {
-                        result.append( (String)v.get( value ) );
+                        m_result.append( (String)groups.get( value ) );
                     }
                     else
                     {
-                        result.append( to[ i ] );
+                        m_result.append( m_to[ i ] );
                     }
                 }
                 else
                 {
                     // XXX - should throw an exception instead?
-                    result.append( '\\' );
+                    m_result.append( '\\' );
                 }
             }
             else
             {
-                result.append( to[ i ] );
+                m_result.append( m_to[ i ] );
             }
         }
-        return result.toString();
+        return m_result.toString();
     }
-
 }
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FileNameMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FileNameMapper.java
index f54f0f10e..023e95303 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FileNameMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FileNameMapper.java
@@ -23,7 +23,6 @@ import org.apache.myrmidon.api.TaskException;
  */
 public interface FileNameMapper
 {
-
     /**
      * Sets the from part of the transformation rule.
      *
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FlatFileNameMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FlatFileNameMapper.java
index ab7c3ea43..46089cbb0 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FlatFileNameMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/FlatFileNameMapper.java
@@ -7,6 +7,8 @@
  */
 package org.apache.tools.ant.util;
 
+import java.io.File;
+
 /**
  * Implementation of FileNameMapper that always returns the source file name
  * without any leading directory information. <p>
@@ -16,24 +18,20 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class FlatFileNameMapper implements FileNameMapper
+public class FlatFileNameMapper
+    implements FileNameMapper
 {
-
     /**
      * Ignored.
-     *
-     * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
     }
 
     /**
      * Ignored.
-     *
-     * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
     }
 
@@ -44,8 +42,8 @@ public class FlatFileNameMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        return new String[]{new java.io.File( sourceFileName ).getName()};
+        return new String[]{new File( sourceFileName ).getName()};
     }
 }
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/GlobPatternMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/GlobPatternMapper.java
index 899931ec1..ab64795ad 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/GlobPatternMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/GlobPatternMapper.java
@@ -19,58 +19,59 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class GlobPatternMapper implements FileNameMapper
+public class GlobPatternMapper
+    implements FileNameMapper
 {
     /**
      * Part of &quot;from&quot; pattern before the *.
      */
-    protected String fromPrefix = null;
+    private String m_fromPrefix;
 
     /**
      * Part of &quot;from&quot; pattern after the *.
      */
-    protected String fromPostfix = null;
+    private String m_fromPostfix;
 
     /**
      * Part of &quot;to&quot; pattern before the *.
      */
-    protected String toPrefix = null;
+    private String m_toPrefix;
 
     /**
      * Part of &quot;to&quot; pattern after the *.
      */
-    protected String toPostfix = null;
+    private String m_toPostfix;
 
     /**
      * Length of the postfix (&quot;from&quot; pattern).
      */
-    protected int postfixLength;
+    private int m_postfixLength;
 
     /**
      * Length of the prefix (&quot;from&quot; pattern).
      */
-    protected int prefixLength;
+    private int m_prefixLength;
 
     /**
      * Sets the &quot;from&quot; pattern. Required.
      *
      * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
-        int index = from.lastIndexOf( "*" );
+        final int index = from.lastIndexOf( "*" );
         if( index == -1 )
         {
-            fromPrefix = from;
-            fromPostfix = "";
+            m_fromPrefix = from;
+            m_fromPostfix = "";
         }
         else
         {
-            fromPrefix = from.substring( 0, index );
-            fromPostfix = from.substring( index + 1 );
+            m_fromPrefix = from.substring( 0, index );
+            m_fromPostfix = from.substring( index + 1 );
         }
-        prefixLength = fromPrefix.length();
-        postfixLength = fromPostfix.length();
+        m_prefixLength = m_fromPrefix.length();
+        m_postfixLength = m_fromPostfix.length();
     }
 
     /**
@@ -78,18 +79,18 @@ public class GlobPatternMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
-        int index = to.lastIndexOf( "*" );
+        final int index = to.lastIndexOf( "*" );
         if( index == -1 )
         {
-            toPrefix = to;
-            toPostfix = "";
+            m_toPrefix = to;
+            m_toPostfix = "";
         }
         else
         {
-            toPrefix = to.substring( 0, index );
-            toPostfix = to.substring( index + 1 );
+            m_toPrefix = to.substring( 0, index );
+            m_toPostfix = to.substring( index + 1 );
         }
     }
 
@@ -100,17 +101,20 @@ public class GlobPatternMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        if( fromPrefix == null
-            || !sourceFileName.startsWith( fromPrefix )
-            || !sourceFileName.endsWith( fromPostfix ) )
+        if( m_fromPrefix == null ||
+            !sourceFileName.startsWith( m_fromPrefix ) ||
+            !sourceFileName.endsWith( m_fromPostfix ) )
         {
             return null;
         }
-        return new String[]{toPrefix
-            + extractVariablePart( sourceFileName )
-            + toPostfix};
+        else
+        {
+            final String result = m_toPrefix +
+                extractVariablePart( sourceFileName ) + m_toPostfix;
+            return new String[]{result};
+        }
     }
 
     /**
@@ -120,9 +124,9 @@ public class GlobPatternMapper implements FileNameMapper
      * @param name Description of Parameter
      * @return Description of the Returned Value
      */
-    protected String extractVariablePart( String name )
+    protected String extractVariablePart( final String name )
     {
-        return name.substring( prefixLength,
-                               name.length() - postfixLength );
+        return name.substring( m_prefixLength,
+                               name.length() - m_postfixLength );
     }
 }
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/IdentityMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/IdentityMapper.java
index 81888402e..e52e5a064 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/IdentityMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/IdentityMapper.java
@@ -15,15 +15,15 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class IdentityMapper implements FileNameMapper
+public class IdentityMapper
+    implements FileNameMapper
 {
-
     /**
      * Ignored.
      *
      * @param from The new From value
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
     {
     }
 
@@ -32,7 +32,7 @@ public class IdentityMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
     }
 
@@ -42,7 +42,7 @@ public class IdentityMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
         return new String[]{sourceFileName};
     }
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/MergingMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/MergingMapper.java
index 4f292eda0..8dd26869a 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/MergingMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/MergingMapper.java
@@ -15,9 +15,10 @@ package org.apache.tools.ant.util;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class MergingMapper implements FileNameMapper
+public class MergingMapper
+    implements FileNameMapper
 {
-    protected String[] mergedFile = null;
+    private String[] m_mergedFile;
 
     /**
      * Ignored.
@@ -35,7 +36,7 @@ public class MergingMapper implements FileNameMapper
      */
     public void setTo( String to )
     {
-        mergedFile = new String[]{to};
+        m_mergedFile = new String[]{to};
     }
 
     /**
@@ -44,9 +45,8 @@ public class MergingMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
     {
-        return mergedFile;
+        return m_mergedFile;
     }
-
 }
diff --git a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/RegexpPatternMapper.java b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/RegexpPatternMapper.java
index a44e35c7b..dd1d6fbdc 100644
--- a/proposal/myrmidon/src/todo/org/apache/tools/ant/util/RegexpPatternMapper.java
+++ b/proposal/myrmidon/src/todo/org/apache/tools/ant/util/RegexpPatternMapper.java
@@ -17,37 +17,34 @@ import org.apache.tools.ant.util.regexp.RegexpMatcherFactory;
  *
  * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a>
  */
-public class RegexpPatternMapper implements FileNameMapper
+public class RegexpPatternMapper
+    implements FileNameMapper
 {
-    protected RegexpMatcher reg = null;
-    protected char[] to = null;
-    protected StringBuffer result = new StringBuffer();
+    private RegexpMatcher m_matcher;
+    private char[] m_to;
+    private StringBuffer m_result = new StringBuffer();
 
     public RegexpPatternMapper()
         throws TaskException
     {
-        reg = ( new RegexpMatcherFactory() ).newRegexpMatcher();
+        m_matcher = ( new RegexpMatcherFactory() ).newRegexpMatcher();
     }
 
     /**
      * Sets the &quot;from&quot; pattern. Required.
-     *
-     * @param from The new From value
-     * @exception TaskException Description of Exception
      */
-    public void setFrom( String from )
+    public void setFrom( final String from )
         throws TaskException
     {
         try
         {
-            reg.setPattern( from );
+            m_matcher.setPattern( from );
         }
         catch( NoClassDefFoundError e )
         {
             // depending on the implementation the actual RE won't
             // get instantiated in the constructor.
-            throw new TaskException( "Cannot load regular expression matcher",
-                                     e );
+            throw new TaskException( "Cannot load regular expression matcher", e );
         }
     }
 
@@ -56,9 +53,9 @@ public class RegexpPatternMapper implements FileNameMapper
      *
      * @param to The new To value
      */
-    public void setTo( String to )
+    public void setTo( final String to )
     {
-        this.to = to.toCharArray();
+        m_to = to.toCharArray();
     }
 
     /**
@@ -68,57 +65,57 @@ public class RegexpPatternMapper implements FileNameMapper
      * @param sourceFileName Description of Parameter
      * @return Description of the Returned Value
      */
-    public String[] mapFileName( String sourceFileName )
+    public String[] mapFileName( final String sourceFileName )
         throws TaskException
     {
-        if( reg == null || to == null || !reg.matches( sourceFileName ) )
+        if( m_matcher == null || m_to == null ||
+            !m_matcher.matches( sourceFileName ) )
         {
             return null;
         }
-        return new String[]{replaceReferences( sourceFileName )};
+        else
+        {
+            return new String[]{replaceReferences( sourceFileName )};
+        }
     }
 
     /**
      * Replace all backreferences in the to pattern with the matched groups of
      * the source.
-     *
-     * @param source Description of Parameter
-     * @return Description of the Returned Value
      */
-    protected String replaceReferences( String source )
+    private String replaceReferences( final String source )
         throws TaskException
     {
-        ArrayList v = reg.getGroups( source );
+        final ArrayList groups = m_matcher.getGroups( source );
 
-        result.setLength( 0 );
-        for( int i = 0; i < to.length; i++ )
+        m_result.setLength( 0 );
+        for( int i = 0; i < m_to.length; i++ )
         {
-            if( to[ i ] == '\\' )
+            if( m_to[ i ] == '\\' )
             {
-                if( ++i < to.length )
+                if( ++i < m_to.length )
                 {
-                    int value = Character.digit( to[ i ], 10 );
+                    final int value = Character.digit( m_to[ i ], 10 );
                     if( value > -1 )
                     {
-                        result.append( (String)v.get( value ) );
+                        m_result.append( (String)groups.get( value ) );
                     }
                     else
                     {
-                        result.append( to[ i ] );
+                        m_result.append( m_to[ i ] );
                     }
                 }
                 else
                 {
                     // XXX - should throw an exception instead?
-                    result.append( '\\' );
+                    m_result.append( '\\' );
                 }
             }
             else
             {
-                result.append( to[ i ] );
+                m_result.append( m_to[ i ] );
             }
         }
-        return result.toString();
+        return m_result.toString();
     }
-
 }