CODEWITHSUNDEEP
javaclasscastexception
hari
hari

Reputation: 1377

ClassCastException Adventure

I have -

class A {
    // contains certain set() and get() methods
}

class B extends A {
    public A getAotherMethod() {
      A a = new A();
      // Contains some logic
      return a
      }
}

class C extends B {
    // contains certain set() and get() methods
}

class D {
    public Object getMethod() {

      B b = new B();
      // Contains some logic
      return b.getAnotherMethod()
     }
}


public static void main(String[] args) {
    A a = new A();
    B b = new B();
    C c = new C();
    D d = new D();
    c = (C) d.getMethod(); // This is giving me ClassCastException
}

Upvotes: 0

Views: 102

Answers (1)

Chandra Sekhar
Chandra Sekhar

Reputation: 19500

d.getMethod();

This will call b.getAnotherMethod() internally, which has

A a = new A();
// Contains some logic
return a

The object of class A cannot cast to class C

We can assign subclass object to superclass reference but we cannot assign superclass object to subclass reference what is done by you in this case.

Upvotes: 6

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