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  1. class A{
  2.     int a;
  3.     public A(int a){
  4.         this.a=a;
  5.     }
  6.     public A(){}
  7. }
  8.  
  9. class B extends A{
  10.     int b;
  11.     public B(int b){
  12.         // here automatically, "super();" will be executed. if it is not present, error!
  13.         this.b=b;
  14.     }
  15. }
  16.  
  17. class Main{
  18.     public static void main(String args[]){
  19.         System.out.println("hi");
  20.         B b = new B(1);
  21.     }
  22. }
Success #stdin #stdout 0.02s 245632KB
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Standard input is empty
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hi
https://ideone.com/7wREv
language:
Java (HotSpot 12)
created:
11 years ago
visibility:
public

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