Error in serialization

Question

Hello,
I am using 9.0.2.0.0 production version of the parser. When I try seralize a xml and deseralize the xml , I am getting the error.
"java.io.IOException: Error in serialization"
DOMParser parser = new DOMParser();
FileInputStream in = new FileInputStream("Test.xml");
parser.parse(in);
Document doc = parser.getDocument();
Node rootNode = doc.getFirstChild();
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("T.obj"));
oos.writeObject(rootNode);
oos.flush();
oos.close();
ObjectInputStream ois = new ObjectInputStream(new FileInputStream("T.obj"));
rootNode = (Node)ois.readObject();
ois.close();
But the same program works when i add these statments before serliazing
Node node = rootNode.getFirstChild();
rootNode.removeChild(node);
rootNode.appendChild(node);
The Code which works
DOMParser parser = new DOMParser();
FileInputStream in = new FileInputStream("Test.xml");
parser.parse(in);
Document doc = parser.getDocument();
Node rootNode = doc.getFirstChild();
Node node = rootNode.getFirstChild();
rootNode.removeChild(node);
rootNode.appendChild(node);
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("T.obj"));
oos.writeObject(rootNode);
oos.flush();
oos.close();
ObjectInputStream ois = new ObjectInputStream(new FileInputStream("T.obj"));
rootNode = (Node)ois.readObject();
ois.close();
Please let me know is there any bug in the XML Parser or in the code
Thanks
Senthil

Answer 1

You shouldn't Serialize swing components - draw the sketches to images or save them as their own objects and read them back in to populate the JPanel.
The reason you are suddenly getting the Exception is because the JFileChooser is referenced within the JPanel while you are saving it - and that particular partof the JFileChooser is not Serializable.
As was said before, you shouldn't Serialize swing components (the API specifies that swing serialized objects may not be compatible with future releases).