Java tutorial
//package com.java2s; import java.io.*; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; public class Main { private static final int BUFFER = 8192; private static void compressFile(File file, ZipOutputStream out, String basedir) { if (!file.exists()) { return; } try { BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file)); ZipEntry entry = new ZipEntry(basedir + file.getName()); out.putNextEntry(entry); int count; byte data[] = new byte[BUFFER]; while ((count = bis.read(data, 0, BUFFER)) != -1) { out.write(data, 0, count); } bis.close(); } catch (Exception e) { throw new RuntimeException(e); } } }