Questions And Answers

More Tutorials

Java Constructors in Inheritance

Constructors in Inheritance:

When a drived class is extended from the base class, the constructor of the base class is executed first followed by the constructor of the derived class. For the following Inheritance hierarchy , the constructors are executed in the order:

C1- Parent
C2 - Child
C3 - Grandchild

Constructors during constructor overloading :

When there are multiple constructors in the parent class, the constructor without any parameters is called from the child class.
If we want to call the constructor with parameters from the parent class, we can use the super keyword.
super(a, b) calls the constructor from the parent class which takes 2 variables

Examples :


class Base1{
        System.out.println("I am a constructor");
    Base1(int x){
        System.out.println("I am an overloaded constructor with value of x as: " + x);

class Derived1 extends Base1{
        System.out.println("I am a derived class constructor");
    Derived1(int x, int y){
        System.out.println("I am an overloaded constructor of Derived with value of y as: " + y);

class ChildOfDerived extends  Derived1{
        System.out.println("I am a child of derived constructor");
    ChildOfDerived(int x, int y, int z){
        super(x, y);
        System.out.println("I am an overloaded constructor of Derived with value of z as: " + z);
public class cwh_46_constructors_in_inheritance {
    public static void main(String[] args) {
        // Base1 b = new Base1();
        // Derived1 d = new Derived1();
        // Derived1 d = new Derived1(14, 9);
        // ChildOfDerived cd = new ChildOfDerived();
        ChildOfDerived cd = new ChildOfDerived(12, 13, 15);


In this page (written and validated by ) you learned about Java Constructors in Inheritance . What's Next? If you are interested in completing Java tutorial, your next topic will be learning about: Java this and super keyword.

Incorrect info or code snippet? We take very seriously the accuracy of the information provided on our website. We also make sure to test all snippets and examples provided for each section. If you find any incorrect information, please send us an email about the issue:

Share On:

Mockstacks was launched to help beginners learn programming languages; the site is optimized with no Ads as, Ads might slow down the performance. We also don't track any personal information; we also don't collect any kind of data unless the user provided us a corrected information. Almost all examples have been tested. Tutorials, references, and examples are constantly reviewed to avoid errors, but we cannot warrant full correctness of all content. By using, you agree to have read and accepted our terms of use, cookies and privacy policy.