下面2个类, 你想在第二个类里面启动第一个类的线程,在第15行应该怎样做?( )
1 public class Century implements Runnable { 2 public void run () { 3 for (int year = 1900;year < 2000;year++) { 4 System.out.println(year); 5 try {Thread.sleep(1000); 6 } catch(InterruptedException e) {} 7 } 8 System.out.println("Happy new millenium!"); 9 } 10 } 11 12 class CountUp { 13 public static void main (String [] args) { 14 Century ourCentury = new Century(); 15 16 } 17 }