call component Listener manually

Question

I add a listener to JCheckBox component and I want call listener manually.how do it?

myCheckBox.selected(false) 

then I want to called myCheckBox listener. Do you have better idea?

Answer 1

I know I'm a bit late, but this should do the trick:

ItemListener listener = new ItemListener() {
    public void itemStateChanged(ItemEvent e) {
         //whatever your itemStateChanged() looks like.
    }
};
JCheckBox checkBox = new JCheckBox();
checkBox.addItemListener(listener);

Then, whenever you need to call it manually:

listener.itemStateChanged(
                new ItemEvent(checkBox, ItemEvent.ITEM_STATE_CHANGED, checkBox, 0));

If you created your listener anonymously, you can still access it like:

checkBox.getItemListeners()[0].itemStateChanged(
                new ItemEvent(checkBox, ItemEvent.ITEM_STATE_CHANGED, checkBox, 0));