Here you can find the source of zip(File dir, ZipOutputStream out, String prefix)
private static void zip(File dir, ZipOutputStream out, String prefix) throws Exception
//package com.java2s; /************************************************************** * // w ww.j a v a 2s . c o m * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. * *************************************************************/ import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; public class Main { private static void zip(File dir, ZipOutputStream out, String prefix) throws Exception { File[] files = dir.listFiles(); for (File f : files) { if (f.isFile()) { BufferedInputStream bis = null; try { bis = new BufferedInputStream(new FileInputStream(f)); ZipEntry entry = new ZipEntry(prefix + f.getName()); out.putNextEntry(entry); int count; byte data[] = new byte[8192]; while ((count = bis.read(data)) != -1) { out.write(data, 0, count); } bis.close(); } finally { if (bis != null) bis.close(); } } else { zip(f, out, prefix + f.getName() + "/"); } } } public static void zip(File workingDir, File zipFile) { zip(workingDir, zipFile, null); } public static void zip(File workingDir, File zipFile, String prefix) { if (!workingDir.isDirectory()) return; if (prefix == null) prefix = ""; ZipOutputStream out = null; try { out = new ZipOutputStream(new BufferedOutputStream(new FileOutputStream(zipFile))); zip(workingDir, out, prefix); } catch (Exception e) { } finally { if (out != null) try { out.close(); } catch (IOException e) { } } } }