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Editorial Team
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Asked: 2026-06-04T07:17:03+00:00

I am coding a Java chess gui. It runs fine as an applet from

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I am coding a Java chess gui. It runs fine as an applet from Eclipse but I am struggling to get it to work on my local machine from an HTML page. I am using images which I include in the JAR. Images are accessed properly with an Eclipse Debug. What am I missing 🙁 ?

The HTML looks like :

<html>
<applet code="Ginsie" 
        height="300px" width="300px" archive="chess.jar">
</applet>
</html>

The output of the Java Console (open from the browser) :

java.lang.RuntimeException: java.lang.ExceptionInInitializerError
    at sun.plugin2.applet.Plugin2Manager.createApplet(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ExceptionInInitializerError
    at BoardPanel.loadSquares(BoardPanel.java:105)
    at BoardPanel.<init>(BoardPanel.java:34)
    at Ginsie.<init>(Ginsie.java:60)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
    at java.lang.reflect.Constructor.newInstance(Unknown Source)
    at java.lang.Class.newInstance0(Unknown Source)
    at java.lang.Class.newInstance(Unknown Source)
    at sun.plugin2.applet.Plugin2Manager$12.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(Unknown Source)
    at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
    at java.awt.EventQueue.access$000(Unknown Source)
    at java.awt.EventQueue$1.run(Unknown Source)
    at java.awt.EventQueue$1.run(Unknown Source)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.AccessControlContext$1.doIntersectionPrivilege(Unknown Source)
    at java.awt.EventQueue.dispatchEvent(Unknown Source)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
    at java.awt.EventDispatchThread.pumpEventsForFilter(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)
Caused by: java.security.AccessControlException: access denied (java.io.FilePermission ..\img\squares\Wood\BSQUARE.jpg read)
    at java.security.AccessControlContext.checkPermission(Unknown Source)
    at java.security.AccessController.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkPermission(Unknown Source)
    at java.lang.SecurityManager.checkRead(Unknown Source)
    at java.io.File.canRead(Unknown Source)
    at javax.imageio.ImageIO.read(Unknown Source)
    at Square.<clinit>(Square.java:47)
    ... 24 more
Exception : java.lang.RuntimeException: java.lang.ExceptionInInitializerError
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1 Answer

  1. Editorial Team

    Judging from the stack trace, it looks as if you are calling javax.imageio.ImageIO.read(File). In Eclipse, it likely works because it is accessing the local filesystem to read the image. Try using Class.getResourceAsStream() to read the file off the classpath (i.e. from the jar) and then pass the InputStream to javax.imageio.ImageIO.read(InputStream).

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