Greetings, I received this exception and I have absolutely no idea why it is occuring: java.lang.VerifyError: (class: Sys3D/SyS_math, method: _$372 signature: ()V) Expecting to find unitialized object on stack at SyS3D.SyS_modelTest.(SyS_modelTest.java:7) at java.lang.Class.newInstanceO(Native Method) at java.lang.Class.newInstance(Compiled Code) at sun.applet.AppletPanel.createApplet(AppletPanel.java:532) at sun.applet.AppletPanel.runLoader(AppletPanel.java:468) at sun.applet.AppletPanel.run(Compiled Code) at java.lang.Thread.run(Compiled Code) Background: I am writing a 3D engine (in 100% java). I was modifying the rasterization code, then I went to to one of my demo applets (SyS_modelTest) the exception occured. Actually in every demo applet the exception occurs. There are a couple strange aspects about this exception that cause me to go insane: 1. It doesn''t occur in IE only in the applet viewer 2. The code that I modified has nothing to do with the class "SyS_math" (only that it calls a method that was previously tested, which had no exceptions) 3. The exception occured about the 3rd time I tested my modified code. 4. When I remove the modified code, the exception still occurs. 5. This is the line of code in SyS_modelTest.java that exception says it occured at:

public class SyS_modelTest extends Applet implements Runnable{

So if you could shine some light on this exception, it would be greatly appreciated. JP. Oh... if it makes any difference I am using JBuilder 3 (JDK 1.2) ============================================== I feel like a kid in some kind of store... ============================================== www.thejpsystem.com

Hey,
If anyone is still curious about this post, I fixed my problem. In the SyS_math I declared the constructor "private" instead of public because I didn''t want any instances of this class -- this was (oddly enough) causing the exception so I changed the constuctor to public.

Cheers, JP.



==============================================
I feel like a kid in some kind of store...
==============================================
www.thejpsystem.com

it has to be public because the Applet class from which it is extended also has public constructors.

well anon, no.
my class SyS_math is a utility class and uses static methods (ie SyS_math.cos()).
The class worked with the constructor being private before the exception occured.Meaning I had written the applet SyS_modelTest before I modified the code, which some how (I haven''t figured it out) caused the exception. By changing the constructor to public from private, I merely got around the problem, but didn''t solve it.

Thanks, anyways.
JP.

==============================================
I feel like a kid in some kind of store...
==============================================
www.thejpsystem.com

If you don''t want the class to be instantiated, why didn''t you just declare it as abstract?

Mark

Thanks, Neurotic for your suggestion. I honestly didn''t think of that tell you mentioned it -> good idea.

JP.

==============================================
I feel like a kid in some kind of store...
==============================================
www.thejpsystem.com