Removing Items In a GUI

**67726e** · 08-01-2010, 04:21 AM

So I know that if you remove something, you would remove('obj'); revalidate(); repaint();

What I'm doing wrong is this:

Java Code:

JButton button = new JButton("Remove Me");
JButton.setBounds(200, 200, 100, 20); // Layout set to null, this is required
add(button);
button.addActionListener(new ActionListener() {
     public void actionPerformed(ActionEvent event) {
           remove(this);
           revalidate();
           repaint();
     }
});

Now this doesn't work. If I do something like

Java Code:

private JButton button;

and use

Java Code:

remove(button);

This works fine. Can you explain to me why the remove(this); doesn't work. I know I'm not using this properly, I just don't know exactly what about it is wrong and how I can get it to work correctly.

**Fubarable** · 08-01-2010, 04:55 AM

Since "this" refers to the class you are currently in when you are calling

Java Code:

remove(this)

you are trying to remove the ActionListener anonymous inner class, not the JButton.

To remove the JButton, you must call

Java Code:

remove((JButton)event.getSource());

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