java – 可运行的界面示例

public class CreateThreadRunnableExample implements Runnable {

    public void run() {

        for (int i = 0; i < 5; i++) {
            System.out.println("Child Thread : " + i);

            try {
                Thread.sleep(50);
            } catch (InterruptedException ie) {
                System.out.println("Child thread interrupted! " + ie);
            }
        }

        System.out.println("Child thread finished!");
    }

    public static void main(String[] args) {

        Thread t = new Thread(new CreateThreadRunnableExample(),"My Thread");

        t.start();

        for (int i = 0; i < 5; i++) {

            System.out.println("Main thread : " + i);

            try {
                Thread.sleep(100);
            } catch (InterruptedException ie) {
                System.out.println("Child thread interrupted! " + ie);
            }
        }
        System.out.println("Main thread finished!");
    }
}

在这个程序中,两种睡眠方式都使用了不同的时间..,所以如果主线程运行时间,那么子线程必须运行2次,但它只运行一次….我们采取可运行或运行的概念然后当主线程结束时,那么2个子线程将处于就绪状态,为什么只有一个子线程运行.