public class Main {
public static void main(String[] args) {
    Bartender bartender = new Bartender();
    Thread bartenderThread = new Thread(bartender, "Bartender");

    bartenderThread.start();

    // Not very robust, but should allow the bartender to get to sleep first
    try {
        TimeUnit.SECONDS.sleep(1);
    } catch (InterruptedException e) {
        // This can be ignored
    }

    int numCustomers = 1;

    for (int i = 1; i <= numCustomers; i++) {
        String customerName = "Customer " + i;
        Customer customer = new Customer(bartenderThread, customerName, 10);

        new Thread(customer, customerName).start();
    }
}

public class Bartender implements Runnable {
public void run() {
    System.out.println("Bartender: My boss isn't in today; time for a quick snooze!");

    while (true) {
        if (Thread.interrupted()) { // Check to see if we have been interrupted,
            System.out.println("Bartender: I have to serve customer..");
            System.out.println("Serving customer...........");
            System.out.println("Serving customer DONE");
        }

        try {
            TimeUnit.SECONDS.sleep(5);
        } catch (InterruptedException e) {
            System.out.println("Bartender Interrupted Exception Handler");
            Thread.currentThread().interrupt();
        }
    }
}

public class Customer implements Runnable {
private Thread bartenderThread;
private String name;
private int waitTime;

public Customer(Thread bartenderThread, String name, int waitTime) {
    this.bartenderThread = bartenderThread;
    this.name = name;
    this.waitTime = waitTime;
}

public void run() {
    System.out.println(name + ": Doesn't seem to be anyone around. I'll wait a moment");

    try {
        TimeUnit.SECONDS.sleep(waitTime);
    } catch (InterruptedException e) {
        // This can be ignored
    }

    System.out.println(name + ": Oh there's a bell! Can I get some service around here?");
    System.out.println("bartenderThread: " + bartenderThread);

    bartenderThread.interrupt(); //
}