Thread: Look & Feel

Hello guys,

Anyone can tell me why I don't see different look&feels? This is my main method:

public static void main(String[ ] args) {
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				JFrame f = createAndShowGUI();
 
				try {
					UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
//					UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
//					UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
					javax.swing.SwingUtilities.updateComponentTreeUI(f);
				} catch(Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

Originally Posted by helloworld922

I believe you must load the look and feel before making your window visible.

I tried. This method actually refreshes the JFrame but it is still the same - look&feel doesn't change:

javax.swing.SwingUtilities.updateComponentTreeUI(JFrame frame);

Here is the way I try to do it:

	private static JFrame createAndShowGUI() {
//		JFrame.setDefaultLookAndFeelDecorated(true);
		JFrame frame = new JFrame("Show Stack");
		try {
			UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
		} catch(Exception e) {
			e.printStackTrace();
		}
		StacksModel model = new StacksModel();
		ShowStacks d = new ShowStacks(model);
		List stacks = model.getModels();
		for(ListIterator i = stacks.listIterator(); i.hasNext(); ) {
			CardStack m = (CardStack) i.next();
			m.addObserver(d);
		}
		JPanel cmd = new JPanel();
		RoundButton button = new RoundButton("RUN");
		button.setActionCommand("RUN");
		JComboBox fromList = new JComboBox(model.getNames());
		fromList.setActionCommand("FROM");
		JComboBox toList = new JComboBox(model.getNames());
		toList.setActionCommand("TO");
		JLabel fromLabel = new JLabel("From:");
		JLabel toLabel = new JLabel("To:");
		cmd.add(fromLabel);
		cmd.add(fromList);
		cmd.add(button);
		cmd.add(toLabel);
		cmd.add(toList);
		TestController controller = new TestController(model);
		button.addActionListener(controller);
		toList.addActionListener(controller);
		fromList.addActionListener(controller);
		frame.getContentPane().add(cmd, BorderLayout.NORTH);
		JPanel p = new JPanel();
		p.setLayout(new BoxLayout(p, BoxLayout.PAGE_AXIS));
		p.add(d);
		frame.getContentPane().add(p, java.awt.BorderLayout.CENTER);
 
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		frame.pack();
		frame.setVisible(true);
 
		return frame;
	}
 
	ShowStacks() {
		createAndShowGUI();
	}
 
	public static void main(String[ ] args) {
 
		javax.swing.SwingUtilities.invokeLater(new Runnable() {
			public void run() {
				JFrame f = createAndShowGUI();
 
/**				try {
					UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
					UIManager.setLookAndFeel(UIManager.getCrossPlatformLookAndFeelClassName());
					UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
					javax.swing.SwingUtilities.updateComponentTreeUI(f);
				} catch(Exception e) {
					e.printStackTrace();
				}
*/			}
		});
	}
}

Have you gone through the tutorial?
How to Set the Look and Feel (The Java™ Tutorials > Creating a GUI With JFC/Swing > Modifying the Look and Feel)

db