MD5Sum.java

package com.example;

import javax.xml.bind.DatatypeConverter;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.math.BigInteger;
import java.security.MessageDigest;

public class MD5Sum {
    public static void main(String[] args) throws Exception {
        MessageDigest md5 = MessageDigest.getInstance("MD5");

//        String name = "out/production/md5sum/com/example/MD5Sum.class";
        String name = "md5sum.iml";
        try (InputStream is = new FileInputStream(new File(name))) {
            byte[] buffer = new byte[1024];
            int read = 0;
            while ((read = is.read(buffer)) > 0) {
                md5.update(buffer);
            }
        }
        byte[] sum = md5.digest();
        System.out.println("1:" + DatatypeConverter.printHexBinary(sum));
        System.out.println("2:" + new BigInteger(1, sum).toString(16));
    }
}