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Message:

Re: Implement Talkative interface to Cat class

Posted by Bobby S. on July 27, 2001 at 7:21 PM

Kishori, thanks for the reply, I have a correction, the abstract class Animal implements Talkative, hence the sub-class Cat does not implement Talkative in my code.

So my question is, if I use the below code and have an additional class RunApp as follows, all's fine:

public class RunApp{
public static void main(String[] args){
Cat c = new Cat();
new Interrogator().letsMakeItTalk(c);
}
}

but if I make the Interrogator class an application all hell breaks lose why?

class Interrogator{
void letsMakeItTalk(Talkative subject){
subject.talk();
}

public static void main(String[] args){
Cat c = new Cat();
new Interrogator().letsMakeItTalk(c);
}
}

Let me know if this makes sense, else I will post the entire code once again. Appreciate your help.

> You need to implement Talkative interface to Cat class. Change
>your Cat class as follows and it will compile.

> class Cat extends Animal implements Talkative {
> public void talk(){
> System.out.println("meow meow");
> }
> }

> class Interrogator {
> void letsMakeItTalk(Talkative subject){
> subject.talk();
> }

> public static void main(String[] args){
> Cat c = new Cat();
> Interrogator.letsMakeItTalk(c);
> }
> }

• Makes sense to me Kishori Sharan July 27, 2001 at 8:09 PM (3)
  • CLASSPATH problem... Bobby S. July 27, 2001 at 9:01 PM (1)
    • I agree Kishori Sharan July 27, 2001 at 9:36 PM (0)
  • Re: Makes sense to me Bobby S. July 27, 2001 at 8:39 PM (0)