java md5 加密

import sun.misc.BASE64Encoder;
import java.security.*;
public class MD5{
   public static void main(String rsg[])throws Exception{
         String username="sa";
         String password="sa";     
         MessageDigest md5=MessageDigest.getInstance("MD5"); 
         BASE64Encoder base64en = new BASE64Encoder(); 
         password=base64en.encode(md5.digest(password.getBytes("utf-8")));
         System.out.println(password);
   }
}