1    /* 
2     * Javassist, a Java-bytecode translator toolkit. 
3     * Copyright (C) 1999-2003 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; 
17    
18   import java.io.*; 
19    
20   import javassist.bytecode.ClassFile; 
21   import javassist.bytecode.ClassFileWriter; 
22    
23   /** 
24    * Dump is a tool for viewing the class definition in the given 
25    * class file.  Unlike the JDK javap tool, Dump works even if 
26    * the class file is broken. 
27    * 
28    * <p>For example, 
29    * <ul><pre>% java javassist.Dump foo.class</pre></ul> 
30    * 
31    * <p>prints the contents of the constant pool and the list of methods 
32    * and fields. 
33    */ 
34   public class Dump { 
35       private Dump() { 
36       } 
37    
38       /** 
39        * Main method. 
40        * 
41        * @param args[0]           class file name. 
42        */ 
43       public static void main(String[] args) throws Exception { 
44           if (args.length != 1) { 
45               System.err.println("Usage: java Dump <class file name>"); 
46               return; 
47           } 
48    
49           DataInputStream in = new DataInputStream( 
50                   new FileInputStream(args[0])); 
51           ClassFile w = new ClassFile(in); 
52           PrintWriter out = new PrintWriter(System.out, true); 
53           out.println("*** constant pool ***"); 
54           w.getConstPool().print(out); 
55           out.println(); 
56           out.println("*** members ***"); 
57           ClassFileWriter.print(w, out); 
58       } 
59   } 
60