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public static void createAndShowGUI() {
			//Create and set up the window.
			JFrame frame = new JFrame("Testing3");
			frame.dispose();
			frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
			JComponent newContentPane = new Test3();
			newContentPane.setOpaque(true); //content panes must be opaque
			frame.setContentPane(newContentPane);

			//Display the window.
			frame.pack();
			frame.setVisible(true);
		}