java 编写程序请用三种方法完成：2个线程同时循环输出“线程名-数字”，其中数字从1变化到10.

方法一：使用继承Thread类的方式

public class ThreadDemo extends Thread {
    private String threadName;

    public ThreadDemo(String threadName) {
        this.threadName = threadName;
    }

    @Override
    public void run() {
        for (int i = 1; i <= 10; i++) {
            System.out.println(threadName + "-" + i);
        }
    }

    public static void main(String[] args) {
        ThreadDemo thread1 = new ThreadDemo("Thread A");
        ThreadDemo thread2 = new ThreadDemo("Thread B");

        thread1.start();
        thread2.start();
    }
}

方法二：使用实现Runnable接口的方式

public class ThreadDemo implements Runnable {
    private String threadName;

    public ThreadDemo(String threadName) {
        this.threadName = threadName;
    }

    @Override
    public void run() {
        for (int i = 1; i <= 10; i++) {
            System.out.println(threadName + "-" + i);
        }
    }

    public static void main(String[] args) {
        ThreadDemo thread1 = new ThreadDemo("Thread A");
        ThreadDemo thread2 = new ThreadDemo("Thread B");

        Thread t1 = new Thread(thread1);
        Thread t2 = new Thread(thread2);

        t1.start();
        t2.start();
    }
}

方法三：使用匿名内部类的方式

public class ThreadDemo {
    public static void main(String[] args) {
        Runnable r1 = new Runnable() {
            @Override
            public void run() {
                for (int i = 1; i <= 10; i++) {
                    System.out.println("Thread A-" + i);
                }
            }
        };

        Runnable r2 = new Runnable() {
            @Override
            public void run() {
                for (int i = 1; i <= 10; i++) {
                    System.out.println("Thread B-" + i);
                }
            }
        };

        Thread t1 = new Thread(r1);
        Thread t2 = new Thread(r2);

        t1.start();
        t2.start();
    }
}