Java MD5 Sum md5sum(File f)

Description

mdsum

License

Open Source License

Declaration

public static String md5sum(File f) throws Exception 

Method Source Code

//package com.java2s;
/*//from   w ww  .j  av a 2s .  c  o  m
 * Copyright (c) 2014-2015 VMware, Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License.  You may obtain a copy of
 * the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed
 * under the License is distributed on an "AS IS" BASIS, without warranties or
 * conditions of any kind, EITHER EXPRESS OR IMPLIED.  See the License for the
 * specific language governing permissions and limitations under the License.
 */

import java.io.File;

import java.io.InputStream;
import java.math.BigInteger;

import java.nio.file.Files;

import java.security.MessageDigest;

public class Main {
    public static String md5sum(File f) throws Exception {
        MessageDigest md = MessageDigest.getInstance("MD5");
        byte[] bytes = new byte[1 << 13];
        int numBytes;
        try (InputStream is = Files.newInputStream(f.toPath())) {
            while ((numBytes = is.read(bytes)) != -1) {
                md.update(bytes, 0, numBytes);
            }
        }
        BigInteger bigInt = new BigInteger(1, md.digest());
        return bigInt.toString(16);
    }
}

Related

1. md5sum(byte[] b)
2. md5sum(byte[] content)
3. md5Sum(byte[] data)
4. md5sum(byte[] input, int length)
5. MD5Sum(byte[] par1Data)
6. md5sum(File f, char[] cbuf, MessageDigest digest, byte[] bbuf)
7. md5sum(File file)
8. md5sum(File file)
9. md5sum(File library)