How to create a zip file in java

 

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
/**
 *
 * @author dell-pc
 */
public class Main {
    /**
     * Creates a zip file
     */
    public void createZipFile() {
        
        try {
            String inputFileName = "test.txt";
            String zipFileName = "compressed.zip";
            
            //Create input and output streams
            FileInputStream inStream = new FileInputStream(inputFileName);
            ZipOutputStream outStream = new ZipOutputStream(new FileOutputStream(zipFileName));
            
            // Add a zip entry to the output stream
            outStream.putNextEntry(new ZipEntry(inputFileName));
            
            byte[] buffer = new byte[1024];
            int bytesRead;
            
            //Each chunk of data read from the input stream 
            //is written to the output stream
            while ((bytesRead = inStream.read(buffer)) > 0) {
                outStream.write(buffer, 0, bytesRead);
            }
            //Close zip entry and file streams
            outStream.closeEntry();
            outStream.close();
            inStream.close();
            
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }
    
    
    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Main().createZipFile();
    }
    
}