Read a zip file checksum value : Zip Tar File « File Input Output « Java

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Java » File Input Output » Zip Tar File

Read a zip file checksum value


       



import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.util.zip.Adler32;

import java.util.zip.CheckedInputStream;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;



public class Main {

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

    String zipname = "d.zip";

    CheckedInputStream checksum = new CheckedInputStream(

        new FileInputStream(zipname), new Adler32());

    ZipInputStream zis = new ZipInputStream(new BufferedInputStream(checksum));

    ZipEntry entry;



    while ((entry = zis.getNextEntry()) != null) {

      System.out.println("Unzipping: " + entry.getName());

      int size;

      byte[] buffer = new byte[2048];



      BufferedOutputStream bos = new BufferedOutputStream(

          new FileOutputStream(entry.getName()), buffer.length);

      while ((size = zis.read(buffer, 0, buffer.length)) != -1) {

        bos.write(buffer, 0, size);

      }

      bos.flush();

      bos.close();

    }



    zis.close();

    System.out.println("Checksum = " + checksum.getChecksum().getValue());

  }

}

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