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Usage of java super Keyword
⦁    super is used to refer immediate parent class instance variable.
⦁    super() is used to invoke immediate parent class constructor.
⦁    super is used to invoke immediate parent class method.
1) super is used to refer immediate parent class instance variable.
Problem without super keyword
⦁    class Vehicle{ 
⦁      int speed=50; 
⦁    } 
⦁    class Bike3 extends Vehicle{ 
⦁      int speed=100; 
⦁      void display(){ 
⦁       System.out.println(speed);//will print speed of Bike  
⦁      } 
⦁      public static void main(

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