Use setLocationRelativeTo(null) This method has a special effect when you pass it a null. According to the Javadoc: If the component is null, or the GraphicsConfiguration associated with this component is null, the window is placed in the center of the screen. This should be done after setting the size or calling pack(), but before … Read more
If you want the GUI to behave as if you clicked the X close button then you need to dispatch a window closing event to the Window. The ExitAction from Closing An Application allows you to add this functionality to a menu item or any component that uses Actions easily. frame.dispatchEvent(new WindowEvent(frame, WindowEvent.WINDOW_CLOSING));
I’m just wondering whether it is good practice to use multiple JFrames? Bad (bad, bad) practice. User unfriendly: The user sees multiple icons in their task bar when expecting to see only one. Plus the side effects of the coding problems.. A nightmare to code and maintain: A modal dialog offers the easy opportunity to … Read more