单选题

有以下程序段,下面正确的选项是 class DemoThread exte...

Question

有以下程序段,下面正确的选项是

class DemoThread extends Thread {
    public static void main(String args[]) {
        DemoThread threadOne = new DemoThread()
        DemoThread threadTwo = new DemoThread()
        threadOne.start()
        System.out.print("thread one.")
        threadTwo.start()
        System.out.print("thread two.")
    }
    public void run() {
        System.out.print("Thread.")
    }
}

A. 编译失败

B. 程序运行结果为：thread one.Thread.thread two.Thread.

C. 程序运行结果是：thread one.thread two.Thread.Thread.

D. 程序运行结果不确定