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

Lets consider this situation

class Animal {   void eat() {     System.out.println("animal : eat");   } }  class Dog extends Animal {   void eat() {     System.out.println("dog : eat");   }   void anotherEat() {     super.eat();   } }  public class Test {   public static void main(String[] args) {     Animal a = new Animal();     a.eat();     Dog d = new Dog();     d.eat();     d.anotherEat();   } } 

The output is going to be

animal : eat dog : eat animal : eat 

The third line is printing "animal:eat" because we are calling super.eat(). If we called this.eat(), it would have printed as "dog:eat".

Answer 2

super is used to access methods of the base class while this is used to access methods of the current class.

Extending the notion, if you write super(), it refers to constructor of the base class, and if you write this(), it refers to the constructor of the very class where you are writing this code.