Super Keyword in JAVA

Super Keyword is a reference variable name that refers to the parent class object. Super means parent class.

class A
{
     int a=40;
}
class B extends A
{
     int a=20;
     void show(int a)
     {
      System.out.println(a);   // output will be 30 
      System.out.println(super.a); // output will be 40
      System.out.println(this.a);   // output will be 20
     }
     public static void main(String[] args)
     {
         B b = new B();
         b.show(30);
}
}

This keyword : current class instance variable

Super keyword : parent class instance variable