Super vs This keyword

Super keyword

  • Used to access methods of the parent class.
  • Represents a current instance of parent class.
  • Used to call the default constructor of the parent class.

Example :

class Easy 
{ 
    int a = 40; 
    static int b = 50; 
  
    void notes() 
    { 
        this.a = 200; 
        System.out.println(a); 
        this.b = 500; 
        System.out.println(b); 
        this.a = 600; 
        System.out.println(a); 
    } 
    public static void main(String[] args) 
    { 
        new Easy().notes(); 
    } 
} 

Output

200
500
600

This Keyword

  • Reserved keyword
  • Represents a current instance of class.
  • This is used to access methods of the current class.
  • Can’t use as an identifier.
  • Refer's as static members.
  • Used to call the default constructor of the same class.

Example :

class Easy
{ 
    int a = 20; 
    static int b = 40; 
  
    void notes() 
    {  
        this.a = 300; 
        System.out.println(a);  
        this.b = 700; 
        System.out.println(b); 
    }  
    public static void main(String[] args) 
    { 
        new Easy().notes(); 
    } 
} 


Output

300
700