/** * Answer to question. * * - Q: In the constructor of the MyFrame class, comment out the call to the * setTitle method. Run the program. What happens? Then undo the commenting out. * * - A: The title will become empty. * * - Q: Comment out the call to the setSize method. Run the program. What * happens? Then undo the commenting out * * - A: Yes the program is still running. Because the "close windows" event is * not linked to the program ended event. So the program won't known the windows * is closed and will continue running. * * - Q: Comment out the call to the setVisible method. Run the program. What * happens? * * - A: Frame will not show and program will end. * * - Q: In a line before the call to the setVisible method, add a call to the * setLocationRelativeTo method of the frame and give it an argument of null. * Run the program. What happens? * * - A: The frame will show in the center of the screen. But did not work as * expected while using mutiple screen and x11-wayland or wayland platform. * * - Q: In the run method of the anonymous class inside the Start class, add a * second MyFrame object. Run the program. What happens? (Use the mouse to move * the frame to check what happens!) What happens when you close one of the * two frames? Then undo the change in the run method. * * - A: Two frame will show in the screen. If one of the frame is closed, the * both frame will be closed. Because they are connnect to the same event. * */ public class Start { public static void main(String[] args) { // Dispather javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { new MyFrame(); } }); } }