Question

I am actually working on a java project which shows many frames, and when we click on a button then we go to the appropriate frame … the problem is that the first frame always stays visible.

I have tried f1.setVisible(false); in the action performed, but the same problem persist.

Answer 1

Upon opening a new frame, also call a method which closes your window

private void closeWindow(){
    WindowEvent event = new WindowEvent(this, WindowEvent.WINDOW_CLOSING);
    Toolkit.getDefaultToolkit().getSystemEventQueue().postEvent(event);
}