Extracting ZIP file programatically with the help of Java

Purpose: Extracting ZIP file programatically with the help of Java

Some time we may need to extract zip file and read the contents. Following code will help how to extract .zip files. I collected this program form some blog while searching and I want to share this to all through my blog.

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

public class FileUnZip {
 public static void main(String[] args)
 {
  unzip("D://LatestSample.zip", "D://tmp");
  System.out.println("Unzip Completed");
 }

 public static void unzip(String zipFile,String outputPath){
  
        if(outputPath == null)
            outputPath = "";
        else
            outputPath+=File.separator;
        System.out.println(outputPath+=File.separator);
        // 1.0 Create output directory
        File outputDirectory = new File(outputPath);
        if(outputDirectory.exists())
            outputDirectory.delete();
        outputDirectory.mkdir();
        // 2.0 Unzip (create folders & copy files)
        try {
            // 2.1 Get zip input stream
            ZipInputStream zip = new ZipInputStream(new FileInputStream(zipFile));
            ZipEntry entry = null;
            int len;
            byte[] buffer = new byte[1024];
            // 2.2 Go over each entry "file/folder" in zip file
            while((entry = zip.getNextEntry()) != null){
                if(!entry.isDirectory()){
                    System.out.println("-"+entry.getName());                       
                    // create a new file
                    File file = new File(outputPath +entry.getName());
                    // create file parent directory if does not exist
                    if(!new File(file.getParent()).exists())
                        new File(file.getParent()).mkdirs();
                    // get new file output stream
                    FileOutputStream fos = new FileOutputStream(file);
                    // copy bytes
                    while ((len = zip.read(buffer)) > 0) {
                        fos.write(buffer, 0, len);
                    }
                    fos.close();
                }
                zip.close();
            }
        }catch (FileNotFoundException e) {
                e.printStackTrace();
        } catch (IOException e) {
                e.printStackTrace();
        }
 }
}