利用多线程 编写一个模拟时钟(AWT程序、Runnable接口)，有时分秒 针编写一个应用程序，创建三个线程分别显示各自的时间-Use multithreading write a simulation clock (AWT Runnable interface program,), and sometimes needle determined to write every application, create three thread respectively show their time.（有道翻译）