[David Orriss Jr]

I’m trying to add a JXDatePicker to a form and I’m getting the following stacktrace and error:

Annotation: The component cannot be instantiated. Please make sure it is a JavaBean.
java.lang.ClassCastException: org.jdesktop.swingx.plaf.basic.BasicMonthViewUI
    at org.jdesktop.swingx.calendar.JXMonthView.updateUI(JXMonthView.java:305)
    at org.jdesktop.swingx.calendar.JXMonthView.<init>(JXMonthView.java:261)
    at org.jdesktop.swingx.calendar.JXMonthView.<init>(JXMonthView.java:247)
    at org.jdesktop.swingx.JXDatePicker.<init>(JXDatePicker.java:126)
    at org.jdesktop.swingx.JXDatePicker.<init>(JXDatePicker.java:110)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
    at java.lang.Class.newInstance0(Class.java:350)
    at java.lang.Class.newInstance(Class.java:303)
    at org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:130)
    at org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:193)
    at org.netbeans.modules.form.RADComponent.initInstance(RADComponent.java:137)
    at org.netbeans.modules.form.MetaComponentCreator.initComponentInstance(MetaComponentCreator.java:1258)
    at org.netbeans.modules.form.MetaComponentCreator.createVisualComponent(MetaComponentCreator.java:757)
    at org.netbeans.modules.form.MetaComponentCreator.access$1(MetaComponentCreator.java:746)
    at org.netbeans.modules.form.MetaComponentCreator$2.run(MetaComponentCreator.java:169)
    at org.netbeans.modules.form.FormLAF$1.run(FormLAF.java:58)
    at org.openide.util.Mutex.doEventAccess(Mutex.java:1172)
    at org.openide.util.Mutex.readAccess(Mutex.java:253)
    at org.netbeans.modules.form.FormLAF.executeWithLookAndFeel(FormLAF.java:43)
    at org.netbeans.modules.form.MetaComponentCreator.precreateVisualComponent(MetaComponentCreator.java:166)
    at org.netbeans.modules.form.HandleLayer$NewComponentDrag.init(HandleLayer.java:2471)
    at org.netbeans.modules.form.HandleLayer$NewComponentDrag.<init>(HandleLayer.java:2466)
    at org.netbeans.modules.form.HandleLayer.mouseMoved(HandleLayer.java:1612)
    at java.awt.Component.processMouseMotionEvent(Component.java:5533)
    at javax.swing.JComponent.processMouseMotionEvent(JComponent.java:3144)
    at java.awt.Component.processEvent(Component.java:5257)
    at java.awt.Container.processEvent(Container.java:1966)
    at java.awt.Component.dispatchEventImpl(Component.java:3955)
    at java.awt.Container.dispatchEventImpl(Container.java:2024)
    at java.awt.Component.dispatchEvent(Component.java:3803)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4212)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:3905)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:3822)
    at java.awt.Container.dispatchEventImpl(Container.java:2010)
    at java.awt.Window.dispatchEventImpl(Window.java:1774)
    at java.awt.Component.dispatchEvent(Component.java:3803)
[catch] at java.awt.EventQueue.dispatchEvent(EventQueue.java:463)
    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)

[David Orriss Jr]

P.S. I’m working on a sample project to demonstrate the error. When I have it ready I’ll put it on a server for you guys.

[David Orriss Jr]

I found that upgrading to the latest SwingX release resolved this issue. Please close this out. Thanks!

[Author]

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