Проверил, возвращает 10 по окончанию метода, что не так?
package com.javarush.task.task16.task1607;
import java.util.ArrayList;
import java.util.List;
import java.util.*;
/*
Horse Racing
*/
public class Solution {
public static void main(String[] args) throws InterruptedException {
List<Horse> horses = prepareHorsesAndStart(10);
while (calculateHorsesFinished(horses) != horses.size()) {
}
}
public static int calculateHorsesFinished(List<Horse> horses) throws InterruptedException {
int finishedCount = 0;
for (Horse horse : horses){
if (!horse.isFinished()){
System.out.println("Waiting for " + horse.getName());
horse.join();
finishedCount++;
} else {
finishedCount++;
}
}
return finishedCount;
}
public static List<Horse> prepareHorsesAndStart(int horseCount) {
List<Horse> horses = new ArrayList<>(horseCount);
String number;
for (int i = 1; i < horseCount + 1; i++) {
number = i < 10 ? ("0" + i) : "" + i;
horses.add(new Horse("Horse_" + number));
}
for (int i = 0; i < horseCount; i++) {
horses.get(i).start();
}
return horses;
}
public static class Horse extends Thread {
private boolean isFinished;
public Horse(String name) {
super(name);
}
public boolean isFinished() {
return isFinished;
}
public void run() {
String s = "";
for (int i = 0; i < 1001; i++) { // Delay
s += "" + i;
if (i == 1000) {
s = " has finished the race!";
System.out.println(getName() + s);
isFinished = true;
}
}
}
}
}