Obsolete Interface Used, a bug of JRE?

[Chinh Tran Nam]

Dear All,

I'm writing an applet to use in web application which is for showing a list from backend db. I want to keep the previous state of the list (cursor position, the selected entry...) when user navigates back to the page containing the applet.
My solution is to keep the main Panel object (showing the list) of the applet in a static Hashtable and get it from this Hashtable when returning.
My applet worked smoothly in IE with Microsoft JVM plugin but it failed when I used Sun JRE 1.4 (IE, Firefox). Here is exception it thrown:

[B]java.lang.InternalError: obsolete interface used[/B]
at sun.java2d.NullSurfaceData.getRaster(Unknown Source)
at sun.java2d.loops.OpaqueCopyAnyToArgb.Blit(Unknown Source)
at sun.java2d.loops.GraphicsPrimitive.convertFrom(Unknown Source)
at sun.java2d.loops.MaskBlit$General.MaskBlit(Unknown Source)
at sun.java2d.loops.Blit$GeneralMaskBlit.Blit(Unknown Source)
at sun.java2d.pipe.DrawImage.blitSurfaceData(Unknown Source)
at sun.java2d.pipe.DrawImage.renderSurfaceData(Unknown Source)
at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
at sun.java2d.pipe.DrawImage.copyImage(Unknown Source)
at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
at sun.java2d.SunGraphics2D.drawImage(Unknown Source)
at sun.plugin.AppletViewer.paintForegrnd(Unknown Source)
at sun.plugin.AppletViewer.paint(Unknown Source)
at sun.awt.RepaintArea.paint(Unknown Source)
at sun.awt.windows.WComponentPeer.handleEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)

This exception thrown when the Panel object is retrieved from static Hashtable and added to the applet's interface.

Has anyone experienced this problem? Please let me know how to fix it?

Thanks in advance.
[ July 27, 2005: Message edited by: Chinh Tran Nam ]

[Ernest Friedman-Hill]

Are you perhaps using an ancient copy of Visual J++ as your development environment?

[Chinh Tran Nam]

No, I'm using Eclipse. Please let me know what will happen if I use that version of Visual J++?
Thanks
[ July 28, 2005: Message edited by: Chinh Tran Nam ]

[Dale Seng]

Eclipse will use whatever SDK it finds, and it might have found an old one. You can dig around in Eclipse to see which SDK it's using. You can set it in two places, one for the default Java project, and one for the individual project. If you created the project yourself (ie didn't inherit it), then likely you're using the default SDK.