What object came to me?

Question

1C

I have a class with a constructor that takes a Object. I create 2 instances of this class and pass type Integerand type Doublerespectively to the constructor. How can I determine which one Objectcame to me in the constructor? ( Integeror Double?

Answer 1

Use the instanceof keyword

public MyClass(Object o){
   if (o instanceof Integer) {
      //Действия для Integer
   }
   if (o instanceof Double) {
      //Действия для Double
   }
}

But if you need to implement such a condition, then most likely you have a mistake somewhere in the application architecture.

Answer 2

public MyClass(Integer o){
      //Действия для Integer
}
public MyClass(Double o){
      //Действия для Double
}

ne?!
what you are doing is like passing void* everywhere in c++. what is the profit?