HashTest.java

import java.security.*;

public class HashTest
{
    public static void main(String[] args)
        throws Exception
    {
        System.out.println(hash("testing"));
    }

    public static String hash(String message)
        throws Exception
    {
        MessageDigest m = MessageDigest.getInstance("MD5");
        byte[] digest = m.digest(message.getBytes("UTF-8"));
        StringBuffer builder = new StringBuffer();
        for(int i = 0; i < digest.length; ++i) {
            builder.append(Integer.toHexString((digest[i] & 0xFF) | 0x100).substring(1, 3));
        }
        return builder.toString();
    }
}