How to encode Text message into SHA1 and MD5 in java

Encode text in SHA1

import java.security.*;

import java.math.*;

public class SHA1 {

    public static void main(String args[]) throws Exception{

        String txt="Hello Ramsis";

        MessageDigest m=MessageDigest.getInstance("SHA1");

        m.update(txt.getBytes(),0,txt.length());

        System.out.println("SHA1 Code: "+new BigInteger(1,m.digest()).toString(16));

    }

}

//--------------------------------------------------------------------------------------------------

Encode text in MD5

import java.security.*;

import java.math.*;

public class MD5 {

    public static void main(String args[]) throws Exception{

        String txt="Aman";

        MessageDigest m=MessageDigest.getInstance("MD5");

        m.update(txt.getBytes(),0,txt.length());

        System.out.println("MD5 Code: "+new BigInteger(1,m.digest()).toString(16));

    }

}