1 /* 2 * Javassist, a Java-bytecode translator toolkit. 3 * Copyright (C) 1999-2007 Shigeru Chiba. All Rights Reserved. 4 * 5 * The contents of this file are subject to the Mozilla Public License Version 6 * 1.1 (the "License"); you may not use this file except in compliance with 7 * the License. Alternatively, the contents of this file may be used under 8 * the terms of the GNU Lesser General Public License Version 2.1 or later. 9 * 10 * Software distributed under the License is distributed on an "AS IS" basis, 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12 * for the specific language governing rights and limitations under the 13 * License. 14 */ 15 16 package javassist.tools; 17 18 import java.io.*; 19 import javassist.bytecode.ClassFile; 20 import javassist.bytecode.ClassFilePrinter; 21 22 /** 23 * Dump is a tool for viewing the class definition in the given 24 * class file. Unlike the JDK javap tool, Dump works even if 25 * the class file is broken. 26 * 27 * <p>For example, 28 * <ul><pre>% java javassist.tools.Dump foo.class</pre></ul> 29 * 30 * <p>prints the contents of the constant pool and the list of methods 31 * and fields. 32 */ 33 public class Dump { 34 private Dump() {} 35 36 /** 37 * Main method. 38 * 39 * @param args <code>args[0]</code> is the class file name. 40 */ 41 public static void main(String[] args) throws Exception { 42 if (args.length != 1) { 43 System.err.println("Usage: java Dump <class file name>"); 44 return; 45 } 46 47 DataInputStream in = new DataInputStream( 48 new FileInputStream(args[0])); 49 ClassFile w = new ClassFile(in); 50 PrintWriter out = new PrintWriter(System.out, true); 51 out.println("*** constant pool ***"); 52 w.getConstPool().print(out); 53 out.println(); 54 out.println("*** members ***"); 55 ClassFilePrinter.print(w, out); 56 } 57 } 58
