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diff --git a/src/main/javassist/tools/Dump.java b/src/main/javassist/tools/Dump.java
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+++ b/src/main/javassist/tools/Dump.java
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+/*
+ * Javassist, a Java-bytecode translator toolkit.
+ * Copyright (C) 1999-2005 Shigeru Chiba. All Rights Reserved.
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License.  Alternatively, the contents of this file may be used under
+ * the terms of the GNU Lesser General Public License Version 2.1 or later.
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ */
+
+package javassist.tools;
+
+import java.io.*;
+import javassist.bytecode.ClassFile;
+import javassist.bytecode.ClassFileWriter;
+
+/**
+ * Dump is a tool for viewing the class definition in the given
+ * class file.  Unlike the JDK javap tool, Dump works even if
+ * the class file is broken.
+ *
+ * <p>For example,
+ * <ul><pre>% java javassist.tools.Dump foo.class</pre></ul>
+ *
+ * <p>prints the contents of the constant pool and the list of methods
+ * and fields.
+ */
+public class Dump {
+    private Dump() {}
+
+    /**
+     * Main method.
+     *
+     * @param args           <code>args[0]</code> is the class file name.
+     */
+    public static void main(String[] args) throws Exception {
+        if (args.length != 1) {
+            System.err.println("Usage: java Dump <class file name>");
+            return;
+        }
+
+        DataInputStream in = new DataInputStream(
+                                         new FileInputStream(args[0]));
+        ClassFile w = new ClassFile(in);
+        PrintWriter out = new PrintWriter(System.out, true);
+        out.println("*** constant pool ***");
+        w.getConstPool().print(out);
+        out.println();
+        out.println("*** members ***");
+        ClassFileWriter.print(w, out);
+    }
+}