(java)如何获得一个方法（method）的行数

 

public class Widget {
    void x(){System.out.println("I'm x
");}
    //comment added to create space
    void y(){System.out.println("I'm y
");} 
}
// ----------------------------------

import javassist.ClassPool;
import javassist.CtClass;
import javassist.CtMethod;
import javassist.NotFoundException;

public class App {
    public static void main(String[] args) throws NotFoundException {
        System.out.println("Get method line number with javassist
");
        ClassPool pool = ClassPool.getDefault();
        CtClass cc = pool.get("com.quaternion.demo.Widget");
        CtMethod methodX = cc.getDeclaredMethod("x");
        int xlineNumber = methodX.getMethodInfo().getLineNumber(0);
        System.out.println("method x is on line " + xlineNumber + "
");
    }
}

 参考：

http://stackoverflow.com/questions/12834887/how-to-get-the-line-number-of-a-method