package me.bazhenov.bulb;

public class Main {

    public static void main(String[] args) {
        new Thread(new Bulb("first")).start();
        new Thread(new Bulb("seconds")).start();
    }
}

public class Bulb implements Runnable {

    private final String name;

    public Bulb(String name) {
        this.name = name;
    }

    public void run() {
        Thread self = currentThread();
        while(!self.isInterrupted()) {
            System.out.println(name + " bulb is on");
            try {
                sleep(300);
            } catch (InterruptedException e) {
                self.interrupt();
            }
            System.out.println(name + " bulb is off");
        }
    }
}