Java 有人能解释一下这段代码吗？它与线程有关

我无法理解控件是如何从“Expl-Thread”输出语句转移到“Main-Thread”输出语句的

package com.myjava.threads;

class MyRunnableThread implements Runnable {
    public static int myCount = 0;

    public MyRunnableThread() {
    }

    public void run() {
        while (MyRunnableThread.myCount <= 10) {
            try {
                System.out.println("Expl Thread: " + (++MyRunnableThread.myCount));
                Thread.sleep(100);
            } catch (InterruptedException iex) {
                System.out.println("Exception in thread: " + iex.getMessage());
            }
        }
    }
}

public class RunMyThread {
    public static void main(String a[]) {
        System.out.println("Starting Main Thread...");
        MyRunnableThread mrt = new MyRunnableThread();
        Thread t = new Thread(mrt);
        t.start();
        while (MyRunnableThread.myCount <= 10) {
            try {
                System.out.println("Main Thread: " + (++MyRunnableThread.myCount));
                Thread.sleep(100);
            } catch (InterruptedException iex) {
                System.out.println("Exception in main thread: " + iex.getMessage());
            }
        }
        System.out.println("End of Main Thread...");
    }
}



The output is:

控件如何从“Expl-Thread”输出语句传输到“Main-Thread”输出语句

package com.myjava.threads;

class MyRunnableThread implements Runnable {
    public static int myCount = 0;

    public MyRunnableThread() {
    }

    public void run() {
        while (MyRunnableThread.myCount <= 10) {
            try {
                System.out.println("Expl Thread: " + (++MyRunnableThread.myCount));
                Thread.sleep(100);
            } catch (InterruptedException iex) {
                System.out.println("Exception in thread: " + iex.getMessage());
            }
        }
    }
}

public class RunMyThread {
    public static void main(String a[]) {
        System.out.println("Starting Main Thread...");
        MyRunnableThread mrt = new MyRunnableThread();
        Thread t = new Thread(mrt);
        t.start();
        while (MyRunnableThread.myCount <= 10) {
            try {
                System.out.println("Main Thread: " + (++MyRunnableThread.myCount));
                Thread.sleep(100);
            } catch (InterruptedException iex) {
                System.out.println("Exception in main thread: " + iex.getMessage());
            }
        }
        System.out.println("End of Main Thread...");
    }
}



The output is:

控制权未被传递。相反，每个线程都在调用

Thread.sleep(100);

---

由于这是相同的时间，它们轮流进行。将其中一个更改为

sleep（50）

，您将看到其中一个以两倍的速度打印消息。

没有传输的控件。。。线程每100毫秒独立打印到控制台。既然时间是一样的，那么它们似乎是“轮流”的，但哪一个“先走”是不确定的

---

改变一个

线程睡眠（100）值，您将看到其中一个打印时间比另一个长/短
 这是线程调度程序决定的。启动线程时，它将与已经存在的其他线程并行运行。由线程调度程序决定分配给每个线程的顺序和时间

执行顺序没有保证
 请正确设置代码格式-没有任何缩进，阅读起来非常困难。请注意，
++MyRunnableThread.myCount
不是线程安全的-在极少数情况下，您的输出可能不正确