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  1.  
  2.     class A
  3.     {
  4.         public int calc(double num) {
  5.             System.out.println("calc de A");
  6.             return (int)(num+1);
  7.  
  8.         }
  9.     }
  10.  
  11.     class B extends A
  12.     {
  13.         public int calc(long num) {
  14.             System.out.println("calc de B");
  15.             return (int)(num+2);
  16.  
  17.         }
  18.     }
  19.  
  20.     class C extends B
  21.     {
  22.         public int calc(int num) {
  23.             System.out.println("calc de C");
  24.             return num+3;
  25.  
  26.         }
  27.     }
  28.  
  29.     class D extends C
  30.     {
  31.         public int calc(float num) {
  32.             System.out.println("calc de D");
  33.             return (int)(num+4);
  34.  
  35.         }
  36.     }
  37.  
  38.     class Main
  39.     {
  40.         public static void main(String[] args)
  41.         {
  42.     		int num1 = 10;
  43.             long num2 = num1;
  44.  
  45.             A a1 = new D();
  46.             A a2 = new D();
  47.  
  48.             int result = a1.calc(num1) + a2.calc(num2);
  49.  
  50.             System.out.println("Numero: "+ result);
  51.     	}
  52.     }
Success #stdin #stdout 0.07s 380160KB
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calc de A
calc de A
Numero: 22
https://ideone.com/CTdKlv
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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