public class 多线程程序 {
    public static void main(String args[]){
        MyThread t = new MyThread();
        t.start();
        for(int i=0;i<10000;i++){
            System.out.print("Good!");
        }
    }
}
class MyThread extends Thread{
    public void run(){
        for(int i=0;i<10000;i++){
            System.out.print("Nice");
        }
    }
}