Java – Byte Array to Hex String

Another Quick Reference Code Snippet

StringBuilder tempString = new StringBuilder(2 * bytes.length);
for (byte b : bytes) {
tempString.append("0123456789ABCDEF".charAt((b & 0xF0) >> 4));
tempString.append("0123456789ABCDEF".charAt((b & 0x0F)));
}
return tempString.toString();

Source:

http://stackoverflow.com/questions/5470219/java-get-md5-string-from-message-digest