Make fields final where possible.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1145002 13f79535-47bb-0310-9956-ffa450edef68

Author: garydgregory

src/java/org/apache/commons/codec/language/DoubleMetaphone.java

@@ -1031,9 +1031,9 @@ protected static boolean contains(String value, int start, int length,
      */
     public class DoubleMetaphoneResult {
 
-        private StringBuffer primary = new StringBuffer(getMaxCodeLen());
-        private StringBuffer alternate = new StringBuffer(getMaxCodeLen());
-        private int maxLength;
+        private final StringBuffer primary = new StringBuffer(getMaxCodeLen());
+        private final StringBuffer alternate = new StringBuffer(getMaxCodeLen());
+        private final int maxLength;
 
         public DoubleMetaphoneResult(int maxLength) {
             this.maxLength = maxLength;

src/test/org/apache/commons/codec/binary/Base64Test.java

@@ -41,7 +41,7 @@
  */
 public class Base64Test {
 
-    private Random _random = new Random();
+    private final Random _random = new Random();
 
     /**
      * @return Returns the _random.

src/test/org/apache/commons/codec/digest/DigestUtilsTest.java

@@ -35,7 +35,7 @@
  */
 public class DigestUtilsTest {
 
-    private byte[] testData = new byte[1024*1024];
+    private final byte[] testData = new byte[1024*1024];
 
     private byte[] getBytesUtf8(String hashMe) {
         return StringUtils.getBytesUtf8(hashMe);