Question

Suppose that we have a class called class1.

The class1 has a method called method1 and this method gets an object of type class1.
like this:

public class class1
{
     //instance members
     // property methods

    public void method1(class1 obj)
    {
         //...........
    }
}

What does it mean: the method gets an object of this class type? In what scenarios can this be used?

Answer 1

What does it mean: the method gets an object of this class type?

Yep. Nothing odd about that. Why do you ask?

This sort of thing happens all the time. A Set has a method Union which takes another Set. A Giraffe has a method Mate which takes another Giraffe. A Lobster has a method Eat which takes another Lobster. A sequence has a method Concatenate which takes another sequence. And so on.