import java.io.*;
 import java.util.zip.*;
 public class ZipFolderExample
 {
 public static void main(String a[])
  {
  try
     {
     File inFolder=new File("out");
	 File outFolder=new File("Out.zip");
     ZipOutputStream out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(outFolder)));
     BufferedInputStream in = null;
     byte[] data    = new byte[1000];
     String files[] = inFolder.list();
     for (int i=0; i<files.length; i++)
      {
      in = new BufferedInputStream(new FileInputStream(inFolder.getPath() + "/" + files[i]), 1000);                  out.putNextEntry(new ZipEntry(files[i])); 
      int count;
      while((count = in.read(data,0,1000)) != -1)
		  {
           out.write(data, 0, count);
          }
      out.closeEntry();
      }
      out.flush();
      out.close();
      }
      catch(Exception e)
         {
              e.printStackTrace();
          } 
     }
  }