关闭Java框架

Question

I have created a java game and have implemented a GameOver method. This is the code i have for the game over method:

public void gameOver() throws IOException {
   String message = "Game, Want to try Again?";
   String title = "Game Over";
   int reply = JOptionPane.showConfirmDialog(frame, message, title, JOptionPane.YES_NO_OPTION);
    if (reply == JOptionPane.YES_OPTION){
        new Game();
    } else {
        this.getSoundEffect().stopAllMusic();
        new Main().setVisible(true);
    }
}

An issue i am having is closing the original frame. For eg if i click yes the Game frame will open, however, it is already open so i would have two instances of the game working.

Just to let you guys know, i have tried the following options:

    frame.dispose();

    WindowEvent wev = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(wev);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

I was also thinking of doing an actionperformed event, however, i was unable due to the JOptionPane being an int.

Answer 1

Your gameOver method should be like this:

Main mMain ;
public void gameOver() throws IOException {
   String message = "Game, Want to try Again?";
   String title = "Game Over";
   int reply = JOptionPane.showConfirmDialog(frame, message, title, JOptionPane.YES_NO_OPTION);
    if (reply == JOptionPane.YES_OPTION){
        frame.dispose();
        frame.setVisible(true);
    } else {
        this.getSoundEffect().stopAllMusic();
        if(mMain==null)
        {
          mMain = new Main();
        }
        mMain.setVisible(true);
    }
}

EDIT

Aside all thse , You have two variables named frame first one is instance variable which is frame = new JFrame("Game"); and other is final JFrame frame = new JFrame("The Birds Game"); you should change the variable name of other JFrame ..