byte[] buffer = new byte[1024];

    try{

        FileOutputStream fos = new FileOutputStream("C:\MyFile.zip");
        ZipOutputStream zos = new ZipOutputStream(fos);
        ZipEntry ze= new ZipEntry("spy.log");
        zos.putNextEntry(ze);
        FileInputStream in = new FileInputStream("C:\spy.log");

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

        in.close();
        zos.closeEntry();

        //remember close it
        zos.close();

        System.out.println("Done");

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