Как запускать новые потоки в Java

class MyThread extends Thread {
    public void run() {
        System.out.println("Thread is running");
    }
}

// Запуск
MyThread thread = new MyThread();
thread.start();

class MyRunnable implements Runnable {
    public void run() {
        System.out.println("Runnable is running");
    }
}

// Запуск
Thread thread = new Thread(new MyRunnable());
thread.start();

new Thread(() -> System.out.println("Lambda thread")).start();