Hi,
I am just wondering if it is possible to have the following work (i.e. print out: 20 10) without having to use the javassist classloader?

class Observed {

 public int n;

 public int getN() {
 return n;
 }

 public void setN(int n) {
 this.n = n;
 }

}

class Observer {

 public static void writeX(Object target, int value) {

 System.out.println(value);

 }

}

public class ObsObrTest {

 public static void main(String[] args) throws Exception {

 ClassPool cp = ClassPool.getDefault();

 CtClass theObserved = cp.get("Observed");

 CtClass theObserver = cp.get("Observer");

 CodeConverter conv = new CodeConverter();

 conv.replaceFieldWrite(theObserved.getField("n"), theObserver, "writeX");

 theObserved.instrument(conv);

 Class c = theObserved.toClass();

 Observed instanceOfObserved = (Observed)c.newInstance();

 instanceOfObserved.n = 20; //should cause the output of 20

 instanceOfObserved.setN(10); //should cause the output of 10

 }
}