The super keyword is used from within a derived class to refer to properties of the parent class. It is necessary to use super when the property of the derived class has been overridden, and cannot be accessed directly.

  1 program class_super;
  2 
  3   class A ;
  4     integer j;
  5     function new();
  6       begin
  7         j = 10;
  8       end
  9     endfunction
 10     task print();
 11       begin
 12         $display("j is %0d",j);
 13       end
 14     endtask
 15   endclass
 16 
 17   class B extends A;
 18     integer i = 1;
 19     function new();
 20       begin
 21         // call the parent new
 22         super.new(); // constructor chaining
 23         $display("Done calling the parent new");
 24         i = 100;
 25       end
 26     endfunction
 27     // Override the parent class print
 28     task print();
 29       begin
 30         $display("i is %0d",i);
 31         $display("Call the parent print");
 32         super.print();
 33       end
 34     endtask
 35   endclass
 36   
 37   initial begin
 38     B b1;
 39     b1 = new;
 40     b1.print();
 41   end
 42 
 43 endprogram

 Done calling the parent new
 i is 100
 Call the parent print
 j is 10

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