BE THE CODER > Java > Zip Utilities

The following example shows how to unzip a ZIP file to user given directory. It checks for the existence of target directories and create them as needed.

File Name :	com/bethecoder/tutorials/utils/zip/UnZipDirectory.java
Author :	Sudhakar KV
Email :	[email protected]


package com.bethecoder.tutorials.utils.zip;



import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.util.Enumeration;

import java.util.zip.ZipEntry;

import java.util.zip.ZipFile;



public class UnZipDirectory {



  /**

   * @param args

   * @throws IOException

   */

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

    unzipDirectory("C:\\pqr.zip", "C:\\VVVV");

    System.out.println("Done..");

  }



  public static void unzipDirectory(String srcZipFile, String tgtDir)

  throws IOException {

    unzipDirectory(new File(srcZipFile), new File(tgtDir));

  }

  

  public static void unzipDirectory(File srcZipFile, File tgtDir)

      throws IOException {

    /**

     * Make target directory if not available already

     */

    tgtDir.mkdirs();

    

    ZipFile zipFile = new ZipFile(srcZipFile);

    Enumeration<?> entries = zipFile.entries();

    ZipEntry entry = null;

    File tgtFile = null;

    

    while (entries.hasMoreElements()) {

      entry = (ZipEntry) entries.nextElement();

      tgtFile = new File(tgtDir, entry.getName());

      System.out.println("Unzipping file : " + tgtFile);

      

      if (entry.isDirectory() && !tgtFile.exists()) {

        tgtFile.mkdirs();

        continue;

      }

      

      /**

       * Handle file and create parent directory

       * if it does'nt exist

       */

      if (!tgtFile.getParentFile().exists()) {

        tgtFile.getParentFile().mkdirs();

      }



      InputStream inStream = zipFile.getInputStream(entry);

      BufferedOutputStream outStream = 

        new BufferedOutputStream(

          new FileOutputStream(tgtFile));



      byte [] buffer = new byte[1024];

      int read;



      while ((read = inStream.read(buffer)) > 0) {

        outStream.write(buffer, 0, read);

      }



      inStream.close();

      outStream.close();

    }

  }

}

UnZip Directory