【Java】SHA加密

package sdfg;

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

public class sdfg {

    public static String createMD5(String pw) throws NoSuchAlgorithmException
    {
        MessageDigest md;
        md=MessageDigest.getInstance("SHA");
        md.update(pw.getBytes());
        String re=new BigInteger(1,md.digest()).toString(16);
        return re;
    }

    public static void main(String[] args) throws NoSuchAlgorithmException
    {
        String pw="dfgdf";

        System.out.println(createMD5(pw));
    }
}