Use final.

Author: garydgregory

src/main/java/org/apache/commons/codec/binary/Base32.java

@@ -314,7 +314,7 @@ public Base32(final int lineLength, final byte[] lineSeparator, final boolean us
      * @since 1.15
      */
     public Base32(final int lineLength, final byte[] lineSeparator, final boolean useHex,
-                  final byte padding, CodecPolicy decodingPolicy) {
+                  final byte padding, final CodecPolicy decodingPolicy) {
         super(BYTES_PER_UNENCODED_BLOCK, BYTES_PER_ENCODED_BLOCK, lineLength,
                 lineSeparator == null ? 0 : lineSeparator.length, padding, decodingPolicy);
         if (useHex) {

src/main/java/org/apache/commons/codec/language/MatchRatingApproachEncoder.java

@@ -247,7 +247,7 @@ public boolean isEncodeEquals(String name1, String name2) {
         // 5. Obtain the minimum rating value by calculating the length sum of the
         // encoded Strings and sending it down.
         final int sumLength = Math.abs(name1.length() + name2.length());
-        int minRating = getMinRating(sumLength);
+        final int minRating = getMinRating(sumLength);
 
         // 6. Process the encoded Strings from left to right and remove any
         // identical characters found from both Strings respectively.

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

@@ -110,7 +110,7 @@ void run(final TestData data, final String id) {
                 try {
                     invoke();
                     Assert.fail(msg + " but nothing was thrown.");
-                } catch (Exception ex) {
+                } catch (final Exception ex) {
                     assertTrue(msg + " but was " + ex.getClass().getSimpleName(),
                             data.throwable.isAssignableFrom(ex.getClass()));
                 }

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

@@ -172,7 +172,7 @@ public void testDigestInputStream() throws IOException {
         Assert.assertArrayEquals(digestTestData(), DigestUtils.digest(DigestUtils.getDigest(messageDigestAlgorithm),new ByteArrayInputStream(getTestData())));
     }
 
-    private void testDigestPath(OpenOption... options) throws IOException {
+    private void testDigestPath(final OpenOption... options) throws IOException {
         Assume.assumeTrue(DigestUtils.isAvailable(messageDigestAlgorithm));
         Assert.assertArrayEquals(digestTestData(),
             DigestUtils.digest(DigestUtils.getDigest(messageDigestAlgorithm), getTestPath(), options));