Question

I’m serializing a JTextPane‘s Document in order to persist it’s styled text to database. I have a caretListener attached to the JTextPane and I’m wondering if serializing this Document serializies the caretListener as well. The reason why I need to know this is because the custom caretListener class containes JComboBox and I get the following exception when I attempt the serialization:

java.io.NotSerializableException: com.apple.laf.AquaComboBoxUI

I suspect that if the Document contains the caretListener, that’s the reason for this exception.

Here’s the code that serializes it:

DefaultStyledDocument doc = (DefaultStyledDocument) getCellEditor().getCellEditorValue();
doc.setDocumentFilter(null);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(bos);
oos.writeObject((DefaultStyledDocument) doc);
oos.flush();

byte[] data = bos.toByteArray();

oos.close();
bos.close();

And then I’m just saving data in the database.

Addendum

Here’s the custom caret listener:

MyTextPane textpane = new MyTextPane();
textpane.addCaretListener(new caretListener());
public class caretListener implements CaretListener {

    MyTextpane textArea;
    JToggleButton boldbutton;
    JToggleButton italicbutton;
    JToggleButton underlinebutton;
    JComboBox fontscomboBox;
    JComboBox fontSizecombobox;
    // Methods
    ...
}

Answer 1

Document is serialized via Writer and deserialized via Reader. Use the JTextPane‘s getEditorKit() and write/read methods of the kit.