How to get the line number of a method?

Question

Is it possible to get the line number of an method using reflection or other magic?
It is possible if the method is inside the current Stacktrace. Using Thread.c

Answer 1

For me the answer of Quaternion pointing to Javassist is the perfect solution to this question. It works for me and you can use it also when you only get the java.lang.reflect.Method object.

This is how I did it:

Method m; // the method object
ClassPool pool = ClassPool.getDefault();
CtClass cc = pool.get(m.getDeclaringClass().getCanonicalName());
CtMethod javassistMethod = cc.getDeclaredMethod(m.getName());
int linenumber = javassistMethod.getMethodInfo().getLineNumber(0);