Question

I have Four classes A, B, C and Test. Test is used for testing purposes.

B inherits from A. and C inherits from A.

I have a method called check() in the test class. It should return either B or C objects. So i am hoping to add B and C objects in an array, and call a random number between 1 and 2. So one of these 2 will be returned. I am not sure how to add B and C to an array. Can someone show me how to do this in Java ?

public Test{

public A check(){
  // add new B() and new C() to an array
  // call a random number to return element 1 or 2 in the array so it will either return B or C

  return either B or C;
}


}

Answer 1

Even better like this:

public class Test{
    private static Random r = new Random();
    private static A[] arr = new A[] {
        new B(), 
        new C()
    };
    public static A check(){
        return arr[r.nextInt(arr.length)];
    }
}