[CODEC-276] Reliance on default encoding in MurmurHash2 and MurmurHash3.

Reuse our StringUtils.getBytesUtf8(text).

Author: garydgregory

src/main/java/org/apache/commons/codec/digest/MurmurHash2.java

@@ -17,8 +17,7 @@
 
 package org.apache.commons.codec.digest;
 
-import java.nio.charset.Charset;
-import java.nio.charset.StandardCharsets;
+import org.apache.commons.codec.binary.StringUtils;
 
 /**
  * Implementation of the MurmurHash2 32-bit and 64-bit hash functions.
@@ -51,13 +50,6 @@
  */
 public final class MurmurHash2 {
 
-    /**
-     * Default Charset used to convert strings into bytes.
-     * 
-     * Consider private; package private for tests only.
-     */
-    static final Charset GET_BYTES_CHARSET = StandardCharsets.UTF_8;
-
     // Constants for 32-bit variant
     private static final int M32 = 0x5bd1e995;
     private static final int R32 = 24;
@@ -154,7 +146,7 @@ public static int hash32(final byte[] data, final int length) {
      * @see #hash32(byte[], int, int)
      */
     public static int hash32(final String text) {
-        final byte[] bytes = text.getBytes(GET_BYTES_CHARSET);
+        final byte[] bytes = StringUtils.getBytesUtf8(text);
         return hash32(bytes, bytes.length);
     }
 
@@ -268,7 +260,7 @@ public static long hash64(final byte[] data, final int length) {
      * @see #hash64(byte[], int, int)
      */
     public static long hash64(final String text) {
-        final byte[] bytes = text.getBytes(GET_BYTES_CHARSET);
+        final byte[] bytes = StringUtils.getBytesUtf8(text);
         return hash64(bytes, bytes.length);
     }