WaitingThread.java

package modern.challenge;

public class WaitingThread {

    private static final Thread t1 = new CodeT1();

    public void waitingThread() {
        t1.start();
    }

    private static class CodeT1 extends Thread {

        @Override
        public void run() {
            Thread t2 = new Thread(new CodeT2());
            t2.start();

            try {
                t2.join();
            } catch (InterruptedException ex) {
                Thread.currentThread().interrupt();
                // log ex
            }
        }
    }

    private static class CodeT2 implements Runnable {

        @Override
        public void run() {
            try {
                Thread.sleep(2000);
            } catch (InterruptedException ex) {
                Thread.currentThread().interrupt();
                // log ex
            }

            System.out.println("WaitingThread t1: " + t1.getState() + " \n");
        }
    }
}

/*
public void waitingThread() {
        new Thread(() -> {
            Thread t1 = Thread.currentThread();
            Thread t2 = new Thread(() -> {
                try {
                    Thread.sleep(2000);
                    System.out.println("WaitingThread t1: " + t1.getState() + "\n");
                } catch (InterruptedException ex) {
                    Thread.currentThread().interrupt();
                    // log ex
                }
            });
            t2.start();
            try {
                t2.join();
            } catch (InterruptedException ex) {
                Thread.currentThread().interrupt();
                // log ex
            }
        }).start();
}
*/