Question

I have downloaded the recent library by substance and i have downloaded the addons also for supporting SwingX components. I am still getting the following error when i run my application

UIDefaults.getUI() failed: no ComponentUI class for:   org.jdesktop.swingx.JXTaskPaneContainer[,0,0,0x0,invalid,alignmentX=0.0,alignmentY=0.0,bord  er=,flags=9,maximumSize=,minimumSize=,preferredSize=]  
java.lang.Error  
        at javax.swing.UIDefaults.getUIError(UIDefaults.java:711)  
        at javax.swing.MultiUIDefaults.getUIError(MultiUIDefaults.java:133)  
        at javax.swing.UIDefaults.getUI(UIDefaults.java:741)  
        at javax.swing.UIManager.getUI(UIManager.java:1017)  
        at org.jdesktop.swingx.plaf.LookAndFeelAddons.getUI(LookAndFeelAddons.java:308)  
        at org.jdesktop.swingx.JXTaskPaneContainer.updateUI(JXTaskPaneContainer.java:141)  
        at javax.swing.JPanel.<init>(JPanel.java:69)  
        at javax.swing.JPanel.<init>(JPanel.java:78)  
        at org.jdesktop.swingx.JXPanel.<init>(JXPanel.java:133)  
        at org.jdesktop.swingx.JXTaskPaneContainer.<init>(JXTaskPaneContainer.java:113)  
        at operator.table_browser.initComponents(table_browser.java:48)  
        at operator.table_browser.<init>(table_browser.java:33)  
        at forms_helper.form_objects.<clinit>(form_objects.java:71)  
        at Main$1.run(Main.java:53)  
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)  
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)  
        at   java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)  
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)  
        at   java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)  
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)  
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)  
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)  
Exception in thread "AWT-EventQueue-0" java.lang.ExceptionInInitializerError  
        at Main$1.run(Main.java:53)  
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)  
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)  
        at   java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:269)  
        at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:184)  
        at   java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:174)  
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:169)  
        at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:161)  
        at java.awt.EventDispatchThread.run(EventDispatchThread.java:122)  
Caused by: java.lang.NullPointerException  
        at org.jdesktop.swingx.plaf.LookAndFeelAddons.getUI(LookAndFeelAddons.java:313)  
        at org.jdesktop.swingx.JXTaskPaneContainer.updateUI(JXTaskPaneContainer.java:141)  
        at javax.swing.JPanel.<init>(JPanel.java:69)  
        at javax.swing.JPanel.<init>(JPanel.java:78)  
        at org.jdesktop.swingx.JXPanel.<init>(JXPanel.java:133)  
        at org.jdesktop.swingx.JXTaskPaneContainer.<init>(JXTaskPaneContainer.java:113)  
        at operator.table_browser.initComponents(table_browser.java:48)  
        at operator.table_browser.<init>(table_browser.java:33)  
        at forms_helper.form_objects.<clinit>(form_objects.java:71)  
        ... 9 more

Help me to solve this problem!!

Answer 1

Thanks all!!

I got that problem solved by just resetting the NetBeans cache files 🙂 NetBeans is weird sometimes… had to go through some issue which is completely irrelevant.. 🙂