MD5 encryption in Android

Md5.java

import java.io.UnsupportedEncodingException;
import java.math.BigInteger;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

class MD5 {

    public String encrypt(String token) {

        int RESULT_LENGTH = 16;

        MessageDigest cript;

        try {
            cript = MessageDigest.getInstance("MD5");
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e);
        }

        cript.reset();

        try {
            cript.update(token.getBytes("utf8"));
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e);
        }

        return new BigInteger(1, cript.digest()).toString(RESULT_LENGTH);

    }

}