Name: gm110360			Date: 03/21/2003


FULL PRODUCT VERSION :
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
Serialized form of the bean is corrupt and does not
correspond to the actual bean state. It cannot be deserialized
back.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1.Compile&Run attached class
2.
3.

EXPECTED VERSUS ACTUAL BEHAVIOR :
The serialized form of the bean contains broken object
references. Serialized object is below:

<?xml version="1.0" encoding="UTF-8"?>
<java version="1.4.0" class="java.beans.XMLDecoder">
 <object class="Test">
  <void property="table">
   <void method="put">
    <void class="Test">
     <void property="table">
      <void method="put">
       <object idref="Font0"/>
       <string>qqqqqqqqqqqq</string>
      </void>
     </void>
     <void id="Font0" property="key"/>
    </void>
    <object idref="Font0"/>
    <string>qqqqqqqqqqqq</string>
   </void>
  </void>
  <void id="Font0" property="key"/>
 </object>
</java>


ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.Exception: Unbound variable: Font0
Continuing ...
java.lang.NullPointerException
Continuing ...



This bug can be reproduced always.

---------- BEGIN SOURCE ----------

import java.util.HashMap;
import java.util.Arrays;
import java.beans.XMLEncoder;
import java.beans.XMLDecoder;
import java.io.*;
import java.awt.Font;

public class Test {
	private Font key = new Font("Arial", Font.BOLD, 12);  //  !!!
	private HashMap table = new HashMap();

	public Test() {
	}

	public Font getKey() {
		return key;
	}

	public void setKey(Font key) {
		this.key = key;
	}

	public HashMap getTable() {
		return table;
	}

	public void setTable(HashMap table) {
		this.table = table;
	}

	public void setString(String value) {
		table.put(getKey(), value);
	}

	public static void main(String[] args) {
		try {
			Test lr = new Test();
			lr.setString("qqqqqqqqqqqq");
			write(lr, new FileOutputStream("test.xml"));
			read(new FileInputStream("test.xml"));
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	public static void write(Object obj, OutputStream out) throws
IOException {
		BufferedOutputStream bout = new BufferedOutputStream
(out);
		XMLEncoder encoder = new XMLEncoder(out);
		encoder.writeObject(obj);
		encoder.close();
		bout.close();
	}

	public static Object read(InputStream in) throws IOException {
		XMLDecoder decoder = new XMLDecoder(in);
		Object result = decoder.readObject();
		decoder.close();
		return result;
	}

}

---------- END SOURCE ----------
(Review ID: 146830) 
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