如何从JFrame添加/删除JPanel

Question

I'm trying to set a variable to be a new JPanel and then add it once a button is pressed, but it is not working and I don't know why.

code:

private void nextButtonActionPerformed(java.awt.event.ActionEvent evt) {                                           
    remove(scriptPanel);
    scriptPanel = new GemPanel();
    add(scriptPanel);
    validate();
    repaint();
    pack();
}    

GemPanel is just a JPanel class I made. When I press the next button, it re-sizes the frame to be as small as possible and nothing actually happens. If I re-size it to normal, the original scriptPanel is still there.

What gives?

Answer 1

Instead of trying to remove and add entire panels, a better, less problem prone approach would be to use a CardLayout that will allow to swap views. You can see more at How to use Cardlayout

Also, by the looks of your method signature, it seems you're using the Netbeans builder too. You may also want to take a look at How to Use CardLayout with Netbeans Gui Builder