深入解析Java多线程：探究不同的实现方法

public class MyThread extends Thread {
    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Thread 1: " + i);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        MyThread thread1 = new MyThread();
        thread1.start();
        for (int i = 0; i < 10; i++) {
            System.out.println("Main thread: " + i);
        }
    }
}

public class MyRunnable implements Runnable {
    @Override
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println("Thread 2: " + i);
        }
    }
}

public class Main {
    public static void main(String[] args) {
        MyRunnable myRunnable = new MyRunnable();
        Thread thread2 = new Thread(myRunnable);
        thread2.start();
        for (int i = 0; i < 10; i++) {
            System.out.println("Main thread: " + i);
        }
    }
}

public class MyTask implements Runnable {
    private int taskId;
    
    public MyTask(int taskId) {
        this.taskId = taskId;
    }
    
    @Override
    public void run() {
        System.out.println("Task " + taskId + " is running.");
    }
}

public class Main {
    public static void main(String[] args) {
        ExecutorService executorService = Executors.newFixedThreadPool(5);
        
        for (int i = 0; i < 10; i++) {
            MyTask task = new MyTask(i);
            executorService.execute(task);
        }
        
        executorService.shutdown();
    }
}