The player should not display a victory message if the variable isWinnerFound is already set to true (i.e. the winner has already been found).

Question about the task

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Any help please ? What is wrong here ? I tried to put also: if(i == 3 && !OnlineGame.isWinnerFound) { ... } and is not working. It is very annoying.

package com.codegym.task.task16.task1627;

import java.util.ArrayList;
import java.util.List;

public class Solution {
    public static void main(String[] args) throws InterruptedException {
        OnlineGame onlineGame = new OnlineGame();
        onlineGame.start();
    }

    public static class OnlineGame extends Thread {
        public static volatile boolean isWinnerFound = false;

        public static List<String> actions = new ArrayList<>();

        static {
            actions.add("Start game");
            actions.add("Gather resources");
            actions.add("Grow economy");
            actions.add("Kill enemies");
        }

        protected Gamer gamer1 = new Gamer("Smith", 3);
        protected Gamer gamer2 = new Gamer("Jones", 1);
        protected Gamer gamer3 = new Gamer("Gates", 5);

        public void run() {
            gamer1.start();
            gamer2.start();
            gamer3.start();

            while (!isWinnerFound) {
            }
            gamer1.interrupt();
            gamer2.interrupt();
            gamer3.interrupt();
        }
    }

    public static class Gamer extends Thread {
        private int rating;

        public Gamer(String name, int rating) {
            super(name);
            this.rating = rating;
        }

        @Override
        public void run() {
            //write your code here
            int i = 0;
            try {
                while(true) {
                    if (i > 3) {
                        System.out.println(getName() + ":won!");
                        OnlineGame.isWinnerFound = true;
                        break;
                    }
                    System.out.println(getName() + ":" + OnlineGame.actions.get(i));
                    i++;
                    Thread.sleep(1000 / rating);
                }
            }
            catch(InterruptedException e)
            {
                System.out.println(getName() + ":lost");
            }

        }
    }
}

Three people play the game. Each player (Gamer) is characterized by two parameters: last name (name) and the actions-per-second (rating).
Display the actions taken and determine the winner and the losers.
Let's begin...
1. Figure out what the program does.
1.1. List<String> actions stores the sequence of actions performed by each player from 0 to the last.
1.2. isWinnerFound indicates whether the winner has been found.
1.3. The sleep method throws an InterruptedException and takes a long argument.
1.4. The players play independently of each other.
2. Implement the run method so that for each player:
2.1. At regular intervals (1000ms/rating), the actions specified in the actions list are displayed.
2.2. All text begins with the player's name (getName()), followed by a colon, and then the text itself.

Example:[Smith:Game start].

2.3. When a player has performed all of the actions in the actions list, he or she wins. Display [getName() + ":won!"].
2.4. When the winner is found, the game ends, and the remaining players have lost. For these players, display [getName() + ":lost"].

Don't display the square brackets ("[]").

Requirements:

At regular intervals (1000ms/rating), the Gamer class's run method should display the player's last name (getName()), followed by a colon, and then the text in OnlineGame.actions. Example: [Smith:Game start].
When all the game actions have been completed and the winner has not yet been found, the run method must set the flag OnlineGame.isWinnerFound to true (to inform the others that it is the winner).
If a player wins, his or her run method should display [getName() + ":won!"]. For example: [Jones:won!].
The run methods of all players who did not win (those who were interrupted) should display [getName() + ":lost"]. For example: [Gates:lost]
The run method must not throw an exception when it is interrupted.

package com.codegym.task.task16.task1627; import java.util.ArrayList; import java.util.List; public class Solution { public static void main(String[] args) throws InterruptedException { OnlineGame onlineGame = new OnlineGame(); onlineGame.start(); } public static class OnlineGame extends Thread { public static volatile boolean isWinnerFound = false; public static List<String> actions = new ArrayList<>(); static { actions.add("Start game"); actions.add("Gather resources"); actions.add("Grow economy"); actions.add("Kill enemies"); } protected Gamer gamer1 = new Gamer("Smith", 3); protected Gamer gamer2 = new Gamer("Jones", 1); protected Gamer gamer3 = new Gamer("Gates", 5); public void run() { gamer1.start(); gamer2.start(); gamer3.start(); while (!isWinnerFound) { } gamer1.interrupt(); gamer2.interrupt(); gamer3.interrupt(); } } public static class Gamer extends Thread { private int rating; public Gamer(String name, int rating) { super(name); this.rating = rating; } @Override public void run() { //write your code here int i = 0; try { while(true) { if (i > 3 && !OnlineGame.isWinnerFound) { System.out.println(getName() + ":won!"); OnlineGame.isWinnerFound = true; break; } else { System.out.println(getName() + ":" + OnlineGame.actions.get(i)); i++; Thread.sleep(1000 / rating); } } } catch(InterruptedException e) { System.out.println(getName() + ":lost"); } } } }

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Roman

Level 41

11 October 2019, 09:31

solution

while(true) {
    if (i > 3 && !OnlineGame.isWinnerFound) {
        System.out.println(getName() + ":won!");
        OnlineGame.isWinnerFound = true;
        break;
    }
    else {
        System.out.println(getName() + ":" + OnlineGame.actions.get(i));
        i++;
        Thread.sleep(1000 / rating);
    }
}

If (i > 3 && !OnlineGame.isWinnerFound) is false here

System.out.println(getName() + ":" + OnlineGame.actions.get(i));
i++;

you will receive IndexOutOfBoundsException

Alex

Level 24 , Sibiu, Romania

14 October 2019, 17:22

Thank you very much!

Keith Emery

Level 17 , Saint Louis, United States

24 October 2019, 04:59

I don't understand Roman's comment. How did you solve this?

Alex

Level 24 , Sibiu, Romania

24 October 2019, 05:55

Hi Keith, Unfortunately I don't remember how I solve this task and after 30 days codegym deletes my progress. Send me a pm with what exactly you don't understand and I will try to help you!