JAVA MD5 encryption Algorithm source code

Encryption | algorithm | source code import java.security.*;
Import java.security.spec.*;

Class md5_test{

Public final static string MD5 (string s) {
Char hexdigits[] = {
' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ', ' A ', ' B ', ' C ', ' d ',
' E ', ' f '};
try {
byte[] strtemp = S.getbytes ();
MessageDigest mdtemp = messagedigest.getinstance ("MD5");
Mdtemp.update (strtemp);
byte[] MD = Mdtemp.digest ();
int j = Md.length;
Char str[] = new CHAR[J * 2];
int k = 0;
for (int i = 0; i < J; i++) {
byte byte0 = md[i];
str[k++] = hexdigits[byte0 >>> 4 & 0xf];
str[k++] = hexdigits[byte0 & 0xf];
}
return new String (str);
}
catch (Exception e) {
return null;
}
}
public static void Main (string[] args) {
Md5_test AA = new Md5_test ();

System.out.print (MD5_TEST.MD5 ("XX"));
}