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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. class Tester {
  8.  
  9.  
  10.         public static abstract class A {
  11.                 abstract void work();
  12.                 void huh(Tester t) {
  13.                         t.make(this);
  14.                 }
  15.         }
  16.         public static class B extends A {
  17.                 @Override
  18.                 void work() {
  19.                         System.out.println("B");
  20.                 }
  21.  
  22.  
  23.         }
  24.  
  25.         public static class C extends A {
  26.                 @Override
  27.                 void work() {
  28.                         System.out.println("C");
  29.                 }
  30.         }
  31.  
  32.         public static class BB extends B {
  33.                 @Override
  34.                 void work() {
  35.                         System.out.println("BB");
  36.                 }
  37.         }
  38.  
  39.  
  40.  
  41.         void make(A a) {
  42.                 a.work();
  43.                 System.out.println("A generic");
  44.         }
  45.  
  46.         void make(B b) {
  47.                 b.work();
  48.                 System.out.println("B overload");
  49.         }
  50.  
  51.         void make(BB b) {
  52.                 b.work();
  53.                 System.out.println("BB overload");
  54.         }
  55.  
  56.         void make(C c) {
  57.                 c.work();
  58.                 System.out.println("C overload");
  59.         }
  60.  
  61.  
  62.  
  63.  
  64.         public static class Tester2 extends Tester {
  65.  
  66.                 @Override
  67.                 void make(A a) {
  68.  
  69.                         super.make(a);
  70.                         System.out.println("Tester2");
  71.                 }
  72.  
  73.                 @Override
  74.                 void make(B b) {
  75.  
  76.                         super.make(b);
  77.                         System.out.println("Tester2");
  78.                 }
  79.  
  80.                 @Override
  81.                 void make(BB b) {
  82.  
  83.                         super.make(b);
  84.                         System.out.println("Tester2");
  85.                 }
  86.  
  87.                 @Override
  88.                 void make(C c) {
  89.  
  90.                         super.make(c);
  91.                         System.out.println("Tester2");
  92.                 }
  93.  
  94.  
  95.  
  96.  
  97.         }
  98.  
  99.  
  100.  
  101.         public static void main(String[] args) {
  102.  
  103.                 Tester t = new Tester();
  104.                 Tester t2 = new Tester2();
  105.                 B b = new B();
  106.                 BB bb = new BB();
  107.                 C c = new C();
  108.  
  109.                 A ab = new B();
  110.                 A abb = new BB();
  111.                 A ac = new C();
  112.  
  113.                 B bbb = new BB();
  114.  
  115.  
  116.                 t.make(b);
  117.                 t.make(bb);
  118.                 t.make(c);
  119.                 System.out.println("\n");
  120.                 t.make(ab);
  121.                 t.make(abb);
  122.                 t.make(ac);
  123.                 System.out.println("\n");
  124.                 t.make(bbb);
  125.                 System.out.println("\n");
  126.  
  127.                 b.huh(t);
  128.                 bb.huh(t);
  129.                 c.huh(t);
  130.                 System.out.println("\n");
  131.                 b.huh(t2);
  132.                 bb.huh(t2);
  133.                 c.huh(t2);
  134.  
  135.  
  136.  
  137.         }
  138.  
  139. }
Success #stdin #stdout 0.07s 380224KB
comments (?)
stdin
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Standard input is empty
stdout
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B
B overload
BB
BB overload
C
C overload


B
A generic
BB
A generic
C
A generic


BB
B overload


B
A generic
BB
A generic
C
A generic


B
A generic
Tester2
BB
A generic
Tester2
C
A generic
Tester2
https://ideone.com/1s14qi
language:
Java (HotSpot 12)
created:
10 years ago
visibility:
public

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