Добрый день
подскажите почему Валидатор ругается на 2 нить.
package com.javarush.task.task16.task1632;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class Solution {
public static List<Thread> threads = new ArrayList<>(5);
static {
threads.add(new Thread1());
threads.add(new Thread2());
threads.add(new Thread3());
threads.add(new Thread4());
threads.add(new Thread5());
}
public static void main(String[] args) {
}
public static class Thread1 extends Thread{
public void run() {
while (true);
}
}
public static class Thread2 extends Thread{
@Override
public void run() {
try {
while (!isInterrupted()) {
Thread.sleep(0);
}
}catch (InterruptedException e){
System.out.println("InterruptedException");
}
}
}
public static class Thread3 extends Thread{
@Override
public void run() {
while (true){
try {
System.out.println("Ура");
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
public static class Thread4 extends Thread implements Message{
public void run() {
while (!this.isInterrupted()) {
}
}
@Override
public void showWarning() {
this.interrupt();
}
}
public static class Thread5 extends Thread{
@Override
public void run() {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
try {
String s = br.readLine();
int sum = 0;
while (!s.equals("N")){
int a = Integer.parseInt(s);
sum +=a;
s = br.readLine();
}
br.close();
System.out.println(sum);
} catch (IOException e) {
e.printStackTrace();
}
}
}
}