Difference between “this” and“super” keywords in Java

Question

What is the difference between the keywords this and super?

Both are used to access constructors of class right? Can any of you explain?

Answer 1

From your question, I take it that you are really asking about the use of this and super in constructor chaining; e.g.

public class A extends B {
    public A(...) {
        this(...);
        ...
    }
}

versus

public class A extends B {
    public A(...) {
        super(...);
        ...
    }
}

The difference is simple:

• The this form chains to a constructor in the current class; i.e. in the A class.

• The super form chains to a constructor in the immediate superclass; i.e. in the B class.