I'm extending the JFreeChart ChartComposite class.
When I try to create the instance of extended class I'm getting java.lang.VerifyError : .... incompatible object argument for function call error.
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66answers:
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A:
Practically speacking:
It mostly happens when you are compliing with one version of the library, but running with another version of the library.
More precisely, VerifyError is a type of LinkageError. From the javadoc of LinkageError: "Subclasses of LinkageError indicate that a class has some dependency on another class; however, the latter class has incompatibly changed after the compilation of the former class."
Suraj Chandran
2009-11-03 09:23:01
I'm using two plugin in my project. The error occured after adding JFreeChart libraries to each plugin build path. I removed the libraries from one plugin and I implemented the extended class in other plugin. So when I use JFreeChart libraries in only one plugin I have no error.
penguru
2009-11-03 09:49:47
@penguru...hmm can feel it:)
Suraj Chandran
2009-11-03 10:15:14
@penguru so could u solve it
Suraj Chandran
2009-11-03 10:21:09
Yes, I solve the problem. Thanks for the answers..
penguru
2009-11-03 11:46:39
+1
A:
It sounds like you are possibly running against a different version of the JFreeChart JAR than you compiled your code against - does the stack trace contain any information about what the problematic method is?
Another possibility would be that JFreeChart expects a particular version of some 3rd-party library on the classpath whereas you are running with a different version.
oxbow_lakes
2009-11-03 09:23:54