exception sur un lookanfeel

Salut tous, je voudrais que mon application ait le meme style que celle du systeme.
Je fais donc ceci:

Code:

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try
		{
			UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
			SwingUtilities.updateComponentTreeUI(this);
 
		}
		catch (UnsupportedLookAndFeelException ex1) 
		{
 
			System.err.println("Unsupported LookAndFeel");
 
		}
 
		catch (ClassNotFoundException ex2) 
		{
 
			System.err.println("LookAndFeel class not found");
 
		}
 
		catch (InstantiationException ex3) 
		{
			System.err.println("Could not load LookAndFeel");	
		}

Mais ca me sort un exception :

Code:

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Unhandled exception type IllegalAccessException

Ai-je oublier d'importer une librairie ou autre?

Je suis sous eclipse, merci de votre aide.

Il te manque le catch de IllegalAccessException.

arf oui quel ane :-(.

Je dois passer quoi comme parametre a UIManager.setLookAndFeel() pour avoir le style du système?

Merci

Perso j'utilise la librairie Looks de JGoodies et ça donne :

Code:

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		String lafName = Options.getCrossPlatformLookAndFeelClassName();
		try {
			UIManager.setLookAndFeel(lafName);
		} catch (Exception e) {
			System.err.println("Can't set look & feel:" + e);
		}

ok, ca me claque des exceptions:

Code:

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Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.DefaultListCellRenderer.getListCellRendererComponent(DefaultListCellRenderer.java:88)
	at javax.swing.plaf.basic.BasicComboBoxUI.getDisplaySize(BasicComboBoxUI.java:1182)
	at javax.swing.plaf.basic.BasicComboBoxUI.getMinimumSize(BasicComboBoxUI.java:865)
	at javax.swing.plaf.metal.MetalComboBoxUI.getMinimumSize(MetalComboBoxUI.java:293)
	at com.jgoodies.looks.plastic.PlasticComboBoxUI.getMinimumSize(PlasticComboBoxUI.java:146)
	at javax.swing.JComponent.getMinimumSize(JComponent.java:1695)
	at javax.swing.BoxLayout.checkRequests(BoxLayout.java:433)
	at javax.swing.BoxLayout.minimumLayoutSize(BoxLayout.java:276)
	at java.awt.Container.minimumSize(Container.java:1598)
	at java.awt.Container.getMinimumSize(Container.java:1583)
	at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
	at javax.swing.BoxLayout.checkRequests(BoxLayout.java:433)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:375)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:442)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:385)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.BoxLayout.minimumLayoutSize(BoxLayout.java:277)
	at java.awt.Container.minimumSize(Container.java:1598)
	at java.awt.Container.getMinimumSize(Container.java:1583)
	at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
	at javax.swing.BoxLayout.checkRequests(BoxLayout.java:433)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:375)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:442)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:385)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "main" java.lang.NullPointerException
	at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:442)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:385)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.SwingUtilities.updateComponentTreeUI(SwingUtilities.java:1140)
	at JSMTPClient.SetLookAndFell(JSMTPClient.java:165)
	at JSMTPClient.<init>(JSMTPClient.java:58)
	at JSMTPClient.main(JSMTPClient.java:368)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.BoxLayout.minimumLayoutSize(BoxLayout.java:277)
	at java.awt.Container.minimumSize(Container.java:1598)
	at java.awt.Container.getMinimumSize(Container.java:1583)
	at javax.swing.JComponent.getMinimumSize(JComponent.java:1697)
	at javax.swing.BoxLayout.checkRequests(BoxLayout.java:433)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:375)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)
Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
	at javax.swing.SizeRequirements.calculateAlignedPositions(SizeRequirements.java:442)
	at javax.swing.BoxLayout.layoutContainer(BoxLayout.java:385)
	at java.awt.Container.layout(Container.java:1401)
	at java.awt.Container.doLayout(Container.java:1390)
	at java.awt.Container.validateTree(Container.java:1473)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validateTree(Container.java:1480)
	at java.awt.Container.validate(Container.java:1448)
	at javax.swing.RepaintManager.validateInvalidComponents(RepaintManager.java:379)
	at javax.swing.SystemEventQueueUtilities$ComponentWorkRequest.run(SystemEventQueueUtilities.java:113)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
	at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:163)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:157)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:149)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:110)

Réfléchi un peu et relis mon post. J'utilise quelque chose que toi sûrement pas, j'te donnais juste une indic...

Je pense que c'est la même exception qui se propage -_-
Code:

1 2 3 4 5 try { UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName()); } catch(Exception e) { System.out.println(e); }
Aucune raison que ça na marche pas ça (c'est comme natha)

Je pense que le code MeDioN marchera oui.
Son exception c'est parce qu'il essaie d'utiliser le LnF de JGoodies sans avoir la librairie dans son classpath donc forcément, null pointer !

avec

Code:

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try
		{
			UIManager.setLookAndFeel(Options.getCrossPlatformLookAndFeelClassName()); 
			SwingUtilities.updateComponentTreeUI(this);
 
		}
		catch(Exception ex) 
		{
			System.err.println("Can't set look & feel:" + ex); 
		}

aucun soucis.

merci