package com.mkyong.zip;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class UnZip
{
    List<String> fileList;
    private static final String INPUT_ZIP_FILE = "C:\\MyFile.zip";
    private static final String OUTPUT_FOLDER = "C:\\outputzip";

    public static void main( String[] args )
    {
    	UnZip unZip = new UnZip();
    	unZip.unZipIt(INPUT_ZIP_FILE,OUTPUT_FOLDER);
    }

    /**
     * Unzip it
     * @param zipFile input zip file
     * @param output zip file output folder
     */
    public void unZipIt(String zipFile, String outputFolder){

     byte[] buffer = new byte[1024];

     try{

    	//create output directory is not exists
    	File folder = new File(OUTPUT_FOLDER);
    	if(!folder.exists()){
    		folder.mkdir();
    	}

    	//get the zip file content
    	ZipInputStream zis =
    		new ZipInputStream(new FileInputStream(zipFile));
    	//get the zipped file list entry
    	ZipEntry ze = zis.getNextEntry();

    	while(ze!=null){

    	   String fileName = ze.getName();
           File newFile = new File(outputFolder + File.separator + fileName);

           System.out.println("file unzip : "+ newFile.getAbsoluteFile());

            //create all non exists folders
            //else you will hit FileNotFoundException for compressed folder
            new File(newFile.getParent()).mkdirs();

            FileOutputStream fos = new FileOutputStream(newFile);             

            int len;
            while ((len = zis.read(buffer)) > 0) {
       		fos.write(buffer, 0, len);
            }

            fos.close();
            ze = zis.getNextEntry();
    	}

        zis.closeEntry();
    	zis.close();

    	System.out.println("Done");

    }catch(IOException ex){
       ex.printStackTrace();
    }
   }
}

file unzip : C:\outputzip\pdf\Java-Interview.pdf
file unzip : C:\outputzip\spy\log\spy.log
file unzip : C:\outputzip\utf-encoded.txt
file unzip : C:\outputzip\utf.txt
Done