Re: accessing subclasse methods and fields with introspection / reflection

From:

"Oliver Wong" <owong@castortech.com>

Newsgroups:

comp.lang.java.help

Date:

Thu, 03 Aug 2006 14:28:39 GMT

Message-ID:

<rKnAg.182715$S61.70382@edtnps90>

[post re-ordered]

"Samy" <samy@samy.com> wrote in message
news:easa21$rdd$1@reader1.imaginet.fr...

"Oliver Wong" <owong@castortech.com> wrote in message
news:li5Ag.181451$771.101002@edtnps89...

"Samy" <samy@samy.com> wrote in message
news:eaqfde$h2t$1@reader1.imaginet.fr...

From my tests, when I instanciate a D object and invoke a
myDObject.getClass().getMethods() I have what I want. But what I really
would want is to call myDObject.listMyMethods(). So that the object
itself
would tell me it's methods.

public [whatever] listMyMethods() {
return this.getClass().getMethods();
}

No that will not work. I already tryied .

I need to put the method in class A and the way you do it, it will only
return me the methods declared in A but what I want are those declared in
A B C and D.

Thanks anyway

    It works for me.

<SSCCE>
import java.lang.reflect.Method;

abstract class A {
public void methodA() {

}

public Method[] getMethods() {
  return this.getClass().getMethods();
}
}

abstract class B extends A {
public void methodB() {

}
}

abstract class C extends B {
public void methodC() {

}
}

public class D extends C {
  public void methodD() {

  }

  public static void main(String[] args) {
   for (Method m : new D().getMethods()) {
    System.out.println(m);
   }
  }
}
</SSCCE>

    - Oliver