If we add a super() in a parent class constructor, which class will this super() invoke while creating an object of the sub class?

Question

In the below example which class will the super() will call in the Shape constructor while creating an object of Square?

package com.company;

class Shape {
    public Shape() {
        super();
        System.out.println("inside Shape class default constructor");
    }
}

class Rectangle extends Shape {
    public Rectangle() {
        super();
        System.out.println("inside Rectangle class default constructor");
    }
}

class Square extends Rectangle {
    public Square() {
        super();
        System.out.println("inside Square class default constructor");
    }
}

public class Ex2 {
    public static void main(String[] args) {
        Square sq = new Square();
    }
}

Here's the duplicate: https://stackoverflow.com/q/21181125/2988730 — Mad Physicist, Dec 10 '19 at 05:15

score 2 · Answer 1 · answered Dec 10 '19 at 05:07

2

It will call java.lang.Object class's constructor, which is the default parent of all the classes in Java.

answered Dec 10 '19 at 05:07

Sandeep Kumar

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2

Good answer, but please don't encourage OP to expect SO to be a homework resource. – Mad Physicist Dec 10 '19 at 05:13
@MadPhysicist i think this a good question. There might me a duplicate but i couldn't find it. – seenukarthi Dec 10 '19 at 05:15
@KarthikeyanVaithilingam I found it and listed it in a comment under the question – Mad Physicist Dec 10 '19 at 05:16
@MadPhysicist yes I can see now, guess the page was not refreshed. – seenukarthi Dec 10 '19 at 05:18

If we add a super() in a parent class constructor, which class will this super() invoke while creating an object of the sub class?

1 Answers1