怎么在visual Studio code里实现class KY8_1 extends Thread { public SimpleThread(String str) { super(str); } public void run() { for (int i = 0; i < 10; i++) { System.out.println(i + " " + getName()); try { sleep((int)(Math.random() * 1000)); } catch (InterruptedException e) {} } System.out.println("DONE! " + getName()); } } public class TwoThreadsTest { public static void main (String[] args) { new SimpleThread("Go to Beijing??").start(); new SimpleThread("Stay here!!").start(); } }

在 Visual Studio Code 中实现这个类和测试程序的步骤如下：

1. 新建一个 Java 文件，例如 TwoThreadsTest.java，并在文件中输入以下代码：

class KY8_1 extends Thread { 
    public KY8_1(String str) {
        super(str);
    }
    public void run() {
        for (int i = 0; i < 10; i++) {
            System.out.println(i + " " + getName());
            try {
                sleep((int)(Math.random() * 1000));
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
        System.out.println("DONE! " + getName());
    }
}

public class TwoThreadsTest {
    public static void main(String[] args) {
        new KY8_1("Go to Beijing??").start();
        new KY8_1("Stay here!!").start();
    }
}

2. 保存文件并在 Visual Studio Code 中打开终端。

3. 进入文件所在的文件夹并使用以下命令进行编译：

javac TwoThreadsTest.java

4. 编译成功后，使用以下命令运行程序：

java TwoThreadsTest

5. 程序会输出两个线程的执行结果，如下所示：

0 Go to Beijing??
0 Stay here!!
1 Go to Beijing??
1 Stay here!!
2 Stay here!!
2 Go to Beijing??
3 Stay here!!
3 Go to Beijing??
4 Stay here!!
4 Go to Beijing??
5 Go to Beijing??
5 Stay here!!
6 Stay here!!
6 Go to Beijing??
7 Go to Beijing??
7 Stay here!!
8 Stay here!!
8 Go to Beijing??
9 Stay here!!
9 Go to Beijing??
DONE! Stay here!!
DONE! Go to Beijing??

这样就可以在 Visual Studio Code 中成功实现这个类和测试程序了。