fork(1) download
copy 
  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.     public static void main(String[] args) {
  11.         Player player = new Player();
  12.         Random random = new Random();
  13.         for (int i = 0; i < 10; i++) {
  14.             GameObject go = random.nextBoolean() ? new Chest() : new NPC();
  15.             go.accept(player);
  16.         }
  17.     }
  18. }
  19.  
  20. class Player {
  21.     void handle(Chest c) {
  22.         System.out.println("opening a chest");
  23.     }
  24.     public void handle(NPC npc) {
  25.         System.out.println("meeting NPC");
  26.     }
  27. }
  28. abstract class GameObject {
  29.     abstract void accept(Player p);
  30. }
  31. class Chest extends GameObject {
  32.     @Override void accept(Player p) {
  33.         p.handle(this);
  34.     }
  35. }
  36. class NPC extends GameObject {
  37.     @Override void accept(Player p) {
  38.         p.handle(this);
  39.     }
  40. }
Success #stdin #stdout 0.06s 32484KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
meeting NPC
opening a chest
meeting NPC
opening a chest
meeting NPC
meeting NPC
meeting NPC
meeting NPC
opening a chest
meeting NPC
https://ideone.com/UrRsxD
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!