Need java applet help

[Firestorm ZERO]

I'm doing a small applet. All it does is it has a textfield for input by pressing enter and as well some buttons so I have ActionListener and KeyListener. I'm using swing for the GUI. I placed my components into init().

Everything works fine but when I view it with appletviewer and then close it, it gives this error.

Code: Select all

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException: component
 argument pData
        at sun.awt.windows.Win32SurfaceData.initOps(Native Method)
        at sun.awt.windows.Win32SurfaceData.<init>(Win32SurfaceData.java:448)
        at sun.awt.windows.Win32SurfaceData.createData(Win32SurfaceData.java:316
)
        at sun.awt.Win32GraphicsConfig.createSurfaceData(Win32GraphicsConfig.jav
a:357)
        at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java
:332)
        at sun.awt.windows.WComponentPeer.replaceSurfaceData(WComponentPeer.java
:313)
        at sun.awt.windows.WComponentPeer$2.run(WComponentPeer.java:353)
        at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
        at java.awt.EventQueue.dispatchEvent(EventQueue.java:461)
        at java.awt.EventDispatchThread.pumpOneEventForHierarchy(EventDispatchTh
read.java:242)
        at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThre
ad.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)

I don't know what it means. Can anyone help?

[A_old]

that's when closing the applet viewer? try it in a browser and see what happens and let me know. could just be an issue w/ the applet viewer itself. it looks like an issue in the swing thread code, but not positive.

[Firestorm ZERO]

In the browser, it works fine when running the applet. Do you mean when I close like the tab/window of the browser? If so, nothing happens.

[A_old]

applets are meant to be run in web browsers, generally. if you're wanting a standalone application, add the panel to a jframe instead of an applet, then you will not have this issue.

[A_old]

figure it out?

[Firestorm ZERO]

after some searching it seems to be a bug in java sdk apparently stil not fixed for a year or so

[A_old]

there are lots of those, regardless u can try making it standalone to try to get around it