Difference Between this and super in Java with java tutorial, features, history, variables, object, programs, operators, oops concept, array, string, map, math, methods, examples etc.

March 8, 2022 - ... A: We use the super keyword to refer to the parent class instance, to invoke parent class methods, static and instance variables. The “super()” is used to invoke the immediate parent class constructor. ... A: Java enforces that the call to super (explicit or not) must be the first statement ...

With this similarity both these keywords have significant differences between them which are listed as below - ... class A { public int x, y; public A(int x, int y) { this.x = x; this.y = y; } } class B extends A { public int x, y; public B() { this(0, 0); } public B(int x, int y) { super(x + 1, y + 1);// calls parent class constructor this.x = x; this.y = y; } public void print() { System.out.println("Base class : {" + x + ", " + y + "}"); System.out.println("Super class : {" + super.x + ", " + super.y + "}"); } } class Point { public static void main(String[] args) { B obj = new B(); obj.print(); obj = new B(1, 2); obj.print(); } }

June 10, 2024 - We can use this as well as super any number of times in a program. Both are non-static keyword. ... // Java Program to illustrate using this // many number of times class RRR { // instance variable int a = 10; // static variable static int b ...

April 9, 2025 - The this keyword is used for referring to the current instance, differentiating instance variables, and calling constructors within the same class. The super keyword is used to refer to the parent class, access its members, and call its constructor.

Super keyword in java. The java super keyword is used to refer the immediate parent class object. There are three usage of super. Let's see:

April 25, 2025 - If a subclass overrides a method from the superclass and wants to use the superclass’s implementation, we can use ‘super.methodName()’ to explicitly call the superclass method. ... The keyword ‘this’ in Java is a reference variable that refers to the current instance of the class.

September 24, 2024 - The primary purpose of the "this" keyword is to refer to the current object, while the "super" keyword allows access to the members of the parent class. These keywords help resolve naming conflicts, differentiate between instance variables and ...

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November 9, 2022 - It can be used only inside constructor and nowhere else. super() is used to refer only parent class's(super class's) constructor. this() is used to call the current class's constructor.

November 1, 2023 - This is useful when we want to ... a parameter to another method. For example: ... The super keyword is a reference to the current object as an instance of the parent class....

class Animal { String name; Animal(String name) { this.name = name; } public void move() { System.out.println("Animals can move"); } public void show() { System.out.println(name); } } class Dog extends Animal { Dog() { //Using this to call current class constructor this("Test"); } Dog(String name) { //Using super to invoke parent constructor super(name); } public void move() { // invokes the super class method super.move(); System.out.println("Dogs can walk and run"); } } public class Tester { public static void main(String args[]) { // Animal reference but Dog object Animal b = new Dog("Tiger"); b.show(); // runs the method in Dog class b.move(); } } ... Difference between Go and Java.

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September 3, 2025 - Java Full Stack Developer Course . The primary purpose of the "this" keyword is to refer to the current object, while the "super" keyword allows access to the members of the parent class.

this keyword · Java Object getClass() Method · Inheritance(IS-A) Aggregation(HAS-A) Method Overloading · Method Overriding · Covariant Return Type · super keyword · Instance Initializer block · final keyword · Runtime Polymorphism · Dynamic Binding ·

This is the display method of subclass ... automatically acquires the default constructor of the superclass. But if you want to call a parameterized constructor of the superclass, you need to use the super keyword as shown below....

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However, instead of referring to a variable or method in the parent class, this refers to a variable or method in the current class. There are many times when the super keyword is used to remove ambiguity.