CODEWITHSUNDEEP
java
Rancio
Rancio

Reputation: 165

How to find if my object extends a given abstract class ?

I have the main class

public class Main(){
   public static void main(String[] args){
      ArrayList<A> as = new ArrayList<>();
      C c = new C();
      D d = new D();
      E e = new E();

      as.add(c);
      as.add(d);
      as.add(e);

      for(A a : as){
         a.print(); // want to do it conditionally when Object inside list have extended class B
      }
   }
}

Method print() is extended from an abstract class A. Classes C and D extends class B and B extends A.

    A
  /   \
  B    E
 / \
C   D

How can I do this approach?

Tried:

for(A a : as){
   if(a.getClass().getSuperclass().getSimpleName().equals("B")){
      a.print(); // Doesn't work a.getClass().getSuperclass().getSimpleName() prints A
   }
}

Any tip to achieve this?

Upvotes: 1

Views: 104

Answers (1)

Lino
Lino

Reputation: 19926

You can use instanceof:

for(A a : as){
    if(a instanceof B){
        a.print();
    }
}

For more information see this question.

Upvotes: 7

Related Questions