Валидатор говорит что нити стартуют хотя метод мейн пустой

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;

/*
Клубок
*/

public class Solution {
    public static class thread1 extends Thread {
        @Override
        public void run() {
            while (1 > 0) {
            }
        }
    }

    public static class thread2 extends Thread {
        @Override
        public void run() {
            for (int i = 0; i < 10; i++) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    System.out.println("InterruptedException");
                }
            }
        }
    }

    public static class thread3 extends Thread {
        @Override
        public void run() {
            for (int i = 0; i < 100; i++) {
                try {
                    System.out.println("Ура");
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }

            }

        }
    }

    public static class thread4 extends Thread implements Message {
        boolean b = true;

        @Override
        public void run() {
            while (b != false) {

            }
        }

        @Override
        public void showWarning() {
            b = false;
        }
    }

    public static class thread5 extends Thread {
        public thread5() throws IOException {
            BufferedReader read = new BufferedReader(new InputStreamReader(System.in));
            String point = read.readLine();
            int x = 0;

            while (true) {
                if (!point.equals("N")) {
                    Integer i = Integer.parseInt(point);
                    x = i + x;
                    point = read.readLine();
                } else break;
            }
            System.out.println(x);
        }
    }


    public static List<Thread> threads = new ArrayList<>(5);

    static {

        thread1 thread1 = new thread1();
        thread2 thread2 = new thread2();
        thread3 thread3 = new thread3();
        thread4 thread4 = new thread4();
        thread5 thread5 = null;
        try {
            thread5 = new thread5();
        } catch (Exception e) {
            e.printStackTrace();
        }

        threads.add(thread1);
        threads.add(thread2);
        threads.add(thread3);
        threads.add(thread4);
        threads.add(thread5);


    }

    public static void main(String[] args) {


    }
}