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 - In the Child class, the print method calls the instance variables of the parent class using the super keyword. In comparison, the instance variables of child class don't need one. It doesn't matter whether the instance variable of parent class and child class share the same name; they can hold different values and are not overridden.

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(); } }

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.

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(); } }

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....

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June 10, 2024 - In java, super keyword is used to access methods of the parent class while this is used to access methods of the current class.

April 25, 2025 - One of the practical applications of the ‘this’ keyword is constructor chaining. When a class has multiple constructors, each constructor can call another constructor using ‘this()’. This helps reduce redundant code and enhances code reusability. ... In addition to these, we can also use as a parameter in the method call and constructor call. The difference between super and this keyword in Java in tabular form is as follows:

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 ...

As I said in the first line, the main difference between this and super in Java is that this represents current instance of a class, while super represents the current instance of the parent class.

November 9, 2022 - Note: super() should be first statement inside any constructor. 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.

In Java, the keywords "super" and "this" are essential for interacting with classes and objects. In addition to referring class members, they assist in manag...

March 18, 2024 - The this keyword is a reference to the current object. The super keyword is used to access methods and constructors of an object's superclass.

8) “this” can be used to return the current class instance, while “super” is used to distinguish between methods or fields of the superclass and the current class. 9) When overriding a method in a subclass, the “super” keyword can ...

February 5, 2024 - The this keyword is used to access or call current class members(variables, methods or constructors). This keyword is required when we have parameters that have the same names for instance variables or fields.

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February 17, 2023 - It can only refer to instance variables and methods of the current class, while the super keyword can refer to properties and methods of the parent class. Access: The this keyword can only be used within the current class, while the super keyword ...

2 weeks ago - if super class instance members and sub class instance members having different name then we can access super class's instance members and sub class's instance members without super and this keyword respectively otherwise we have to mention ...