How to remove title bar in JFrame
问题 I'm using the following code for practising, http://docs.oracle.com/javase/tutorial/uiswing/examples/layout/BorderLayoutDemoProject/src/layout/BorderLayoutDemo.java I also add frame.setSize(frame.getMaximumSize()); in createAndShowGUI() method, What is more I want this window not to have the title bar, close and minimize buttons. I tried the following code, frame.setUndecorated(true); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); If I added this code before the pack(), it goes into