Decompress the zip file in java

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.util.zip.ZipEntry;

import java.util.zip.ZipInputStream;



/**

* This utility decompresses a standard zip file to a destination directory.

* @author Ha Minh Nam

*

*/

public class UnzipUtil {

    /**

     * A constants for buffer size used to read/write data

     */

    private static final int BUFFER_SIZE = 4096;

   

    /**

     *

     * @param zipFilePath Path of the zip file to be extracted

     * @param destDirectory Path of the destination directory

     * @throws IOException IOException if any I/O error occurred

     */

    public void decompressFile(String zipFilePath, String destDirectory) throws IOException {

        File destDir = new File(destDirectory);

        if (!destDir.exists()) {

            destDir.mkdir();

        }

       

        ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));

       

        ZipEntry entry = zipIn.getNextEntry();

       

        while (entry != null) {

            String filePath = destDirectory + File.separator + entry.getName();

            if (!entry.isDirectory()) {

                extractFile(zipIn, filePath);

            } else {

                File dir = new File(filePath);

                dir.mkdir();

            }

            zipIn.closeEntry();

            entry = zipIn.getNextEntry();

        }

        zipIn.close();

    }

   

    /**

     * Extracts a single file

     * @param zipIn the ZipInputStream

     * @param filePath Path of the destination file

     * @throws IOException if any I/O error occurred

     */

    private void extractFile(ZipInputStream zipIn, String filePath) throws IOException {

        BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(filePath));

        byte[] bytesIn = new byte[BUFFER_SIZE];

        int read = 0;

        while ((read = zipIn.read(bytesIn)) != -1) {

            bos.write(bytesIn, 0, read);

        }  

        bos.close();      

    }

   

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

    {

     String  zipFilePath = "C:\\Users\\Home\\Downloads\\zip\\BasicStrust2ProjectEclipse.zip";

          String destFilePath = "C:\\Users\\Home\\Downloads\\zip\\output";

          UnzipUtil unzipper = new UnzipUtil();

          unzipper.decompressFile(zipFilePath, destFilePath);

    }



}