Java tutorial
/* * The QueryForm License, Version 1.1 * * Copyright (c) 1998 - 2003 David F. Glasser. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by * David F. Glasser." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "QueryForm" and "David F. Glasser" must * not be used to endorse or promote products derived from this * software without prior written permission. For written * permission, please contact dglasser@pobox.com. * * 5. Products derived from this software may not be called "QueryForm", * nor may "QueryForm" appear in their name, without prior written * permission of David F. Glasser. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL DAVID F. GLASSER, THE APACHE SOFTWARE * FOUNDATION OR ITS CONTRIBUTORS, OR ANY AUTHORS OR DISTRIBUTORS * OF THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * * This product includes software developed by the * Apache Software Foundation (http://www.apache.org/). * * * * $Source: /cvsroot/qform/qform/src/org/glasser/util/JarSearcher.java,v $ * $Revision: 1.1 $ * $Author: dglasser $ * $Date: 2003/01/25 23:17:02 $ * * -------------------------------------------------------------------- */ import java.io.*; import java.util.*; import java.util.zip.*; import java.io.*; /** * This program will search all jar and zip files in the current directory for * a given class file. * * @author Dave Glasser */ public class JarSearcher { /** * Returns true if the jar or zip file at jarFilePath contains (with the internal * path) the file named by classFilePath. */ public static boolean searchJarFile(String jarFilePath, String classFilePath) { return searchJarFile(new File(jarFilePath), classFilePath); } public static boolean searchJarFile(File file, String classFilePath) { try { if (!file.exists()) return false; ZipFile jarFile = new ZipFile(file); if (jarFile.getEntry(classFilePath) != null) { jarFile.close(); return true; } else { jarFile.close(); return false; } } catch (IOException ex) { System.out.println(ex.toString()); return false; } } static class ArchiveFilter implements FileFilter { public boolean accept(File pathName) { String upcase = pathName.getName().toUpperCase(); if (upcase.endsWith(".ZIP") || upcase.endsWith(".JAR")) return true; return false; } } public static void main(String[] args) { if (args.length == 0) { System.out.println( "usage: java ClassFinder <class name>\n\n" + "example: java ClassFinder java.lang.String\n"); System.exit(0); } File cwd = new File("."); File[] archives = cwd.listFiles(new ArchiveFilter()); String classFileName = args[0].replace('.', '/'); if (classFileName.endsWith(".class") == false) { classFileName += ".class"; } System.out.println("Searching for " + classFileName + " ..."); for (int j = 0; j < archives.length; j++) { // System.out.println("Searching " + archives[j].getName()); if (searchJarFile(archives[j], classFileName)) { System.out.println("FOUND IN " + archives[j].getName()); } } } }