Error that I don't understand.

Newbie & Debugging Questions
#1

So last night I went to bed and the game I’m working on worked fine. This morning it won’t run. I keeps giving me this error which I will post below. I don’t understand what it means. It doesn’t even mention any of my classes. I’m using netbeans.

If I comment out most of my code except the setting of the applet size in the init method it still runs. But when I comment everything out after the first Object I create, it gives me another errror telling me that seems to being saying that I’m passing the worng arguments to it’s constructor, I haven’t changed that in a few days.

The ony thing I can think which may have caused a problem, is I copy my source code to my gmail as backup. When selecting all the source files, I accidently made a copy of each one. Then I deleted the copies. Maybe I deleted something important, but I can’t think what.

run:
java.lang.VerifyError: (class: arithbequick/Arithbequick, method: init signature: ()V) Incompatible argument to function
at java.lang.Class.getDeclaredConstructors0(Native Method)
at java.lang.Class.privateGetDeclaredConstructors(Class.java:2389)
at java.lang.Class.getConstructor0(Class.java:2699)
at java.lang.Class.newInstance0(Class.java:326)
at java.lang.Class.newInstance(Class.java:308)
at sun.applet.AppletPanel.createApplet(AppletPanel.java:785)
at sun.applet.AppletPanel.runLoader(AppletPanel.java:714)
at sun.applet.AppletPanel.run(AppletPanel.java:368)
at java.lang.Thread.run(Thread.java:619)

#2

I guess its a problem with compiling-running-version problem.

Can you check wich version of javac compiles it, and wich JVM runs it?

Maybe outside of netbeans directly with a buildscript.

Or you compile against a wrong library.

#3

Thanks for the reply.

One thing I’ve done, is set up a new project and copied and pasted every source file into it, and it seems to work now. So that’s ok then.

#4

Dont know netbeans, but in eclipse you can clean and recompile the whole project.
Could have been linked to some outdated classfiles.

#5

I would suspect that you may being using a different library then before or a different JDK.