Problem de-serializing JPanel with null LayoutManager using XMLDecode

Question

Hi,
I'm using Java 1.4.1_01 XMLEncoder/XMLDecoder to serialize JPanel Objects. This works fine if standard Java LayoutManagers (like BorderLayout, ...) are assigned to the JPanels.
Now I'm trying to encode/decode the same JPanel objects using the null LayoutManager, placing the components on the JPanel using the setBounds(Rectangle) method.
The XML file generated by XMLEncode looks like this :
<?xml version="1.0" encoding="UTF-8"?>
<java version="1.4.1_01" class="java.beans.XMLDecoder">
<object class="javax.swing.JPanel">
<void method="add">
<object class="javax.swing.JLabel">
<void property="bounds">
<object class="java.awt.Rectangle">
<int>0</int>
<int>40</int>
<int>56</int>
<int>16</int>
</object>
</void>
which looks fine to me.
Trying to read this with XMLDecode does not place the components on the JPanel, i.e. the panel remains empty.
After running the XMLDecoder on the XML file and looking at the readObject() method's result
[0]= JLabel (id=79)
     _bounds= Rectangle  (id=213)
          height= 16
          width= 56
          x= 0
          y= 40
     accessibleContext= null
     accessibleContext= null
     accessibleIcon= null
     actionMap= null
     alignmentX= Float (id=214)
          value= 0.0
     alignmentY= null
I noticed that the JLabel's bounds are named '_bounds' here ... don't know if that's a problem, but it looks a bit strange ...
Anyway, thanks for any hints on how to get XMLEncoder/XMLDecoder to work with a null LayoutManager.
Ingo

Answer 1

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