Weaving Aspect into executable jar file

Question

I am trying to log all the method calls in a game that comes as an executable jar files.

I am using the command from the command line:

ajc -injars tetris.jar Tracing.aj -outjar tetris.jar...

After compiling the error is:

Exception in thread "main" java.lang.NoClassDefFoundError: org/aspectj/lang/Signature

I am also an Eclipse user.

Answer 1

Yoou need to add aspectjrt.jar to your CLASSPATH.

Since you said you are an Eclipse user: How to Add JARs to Project Build Paths in Eclipse (Java) describes this in great detail.

Answer 2

1) Class is not available in Java Classpath.

2) Any startup script is overriding Classpath environment variable.

As Tomasz Nurkiewicz said you have to add it to your ClassPath.