MAIN.JAVA


package org.suai;

import java.util.*;
public class Main {
    public static void main(String args[]) throws Exception {
        Scanner in = new Scanner(System.in);
        System.out.print("Input number of computers: ");
        int com = in.nextInt();
        System.out.print("Input number of tourists: ");
        int tour = in.nextInt();
        Journal today = new Journal(com, tour);
    }
}











JOURNAL.JAVA

package org.suai;

import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.TimeUnit;
import java.util.*;
public class Journal {
    private int tourists;
    private int computers;

    class Tourist implements Runnable {

        private int man;

        public Tourist (int nam) {
            man = nam;
            new Thread();
        }

        @Override
        public void run() {
            try {
                System.out.println("Tourist " + man + " is online");

                Random random = new Random();
                int time = 900 + random.nextInt(6300);

                Thread.sleep(time/10);
                System.out.println("Tourist " + man + " is done, having spent " + time/60 + " minutes online");
            } catch (InterruptedException e) {}
        }
    }

    public Journal (int com, int tour) {
        tourists = tour;
        computers = com;
        ExecutorService service = Executors.newFixedThreadPool(computers);
        for (int i = 1; i <= tourists; i++) {
            service.execute(new Tourist(i));
        }
        service.shutdown();
        try {
            service.awaitTermination(10, TimeUnit.SECONDS);
        }
        catch (InterruptedException e) {
            e.printStackTrace();
        }
        System.out.println("The place is empty, let's close up and go to the beach!");

    }
}