需要有关如何从JPanel中关闭父JFrame的帮助

Question

I've searched and could not find the answer I need to do the following: I have two java files: one JFrame, one JPanel. I configured a button in the JFrame to open up the JPanel from within the main frame with a new size of 800,800. Now, I want to close the JPanel and go back to the original JFrame (the one that originally was at size 500,500 with an image). It seems simply straightforward, but I've created an instance of the main frame from within the JPanel and set the jPanel to ( this.setVisible(false) ). I created a new jFrame object and set its visibility to true. What happens is, a new instance of the JFrame appears alright, but the JFrame at 800,800 with no image still appears as well. I've tried several configurations of getContentPane() , setContentPane() and even tried passing a JFrame parameter to the constructor of the JPanel. I'm not sure where I am going wrong with this, but any help would be much appreciated. All I want is the original JFrame with the original size and image displayed. Thank you in advance.

private void jButton_closeActionPerformed(java.awt.event.ActionEvent evt) {                                              

    this.setVisible(false);
    mainMenuFrame = new MainMenuFrame();
    mainMenuFrame.setVisible(true);
    invalidate(); validate();
    repaint();

}                                             

Answer 1

you could open and close the jpanel from within your JFrame. the button would be also added to the jframe instead of the jpanel. for easier accessing use the jpanel as member variable