Here you can find the source of zipDir(File zipDir, ZipOutputStream zos, String archiveSourceDir)
protected static void zipDir(File zipDir, ZipOutputStream zos, String archiveSourceDir) throws IOException
//package com.java2s; /*// www . ja v a 2 s .c om * Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved. * * Licensed 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.File; import java.io.FileInputStream; import java.io.IOException; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream; public class Main { protected static void zipDir(File zipDir, ZipOutputStream zos, String archiveSourceDir) throws IOException { //get a listing of the directory content String[] dirList = zipDir.list(); byte[] readBuffer = new byte[40960]; int bytesIn; //loop through dirList, and zip the files if (dirList != null) { for (String aDirList : dirList) { File f = new File(zipDir, aDirList); //place the zip entry in the ZipOutputStream object zos.putNextEntry(new ZipEntry(getZipEntryPath(f, archiveSourceDir))); if (f.isDirectory()) { //if the File object is a directory, call this //function again to add its content recursively zipDir(f, zos, archiveSourceDir); //loop again continue; } //if we reached here, the File object f was not a directory //create a FileInputStream on top of f try (FileInputStream fis = new FileInputStream(f)) { //now write the content of the file to the ZipOutputStream while ((bytesIn = fis.read(readBuffer)) != -1) { zos.write(readBuffer, 0, bytesIn); } } } } } protected static String getZipEntryPath(File f, String archiveSourceDir) { String entryPath = f.getPath(); entryPath = entryPath.substring(archiveSourceDir.length() + 1); if (File.separatorChar == '\\') { entryPath = entryPath.replace(File.separatorChar, '/'); } if (f.isDirectory()) { entryPath += "/"; } return entryPath; } }