多选题 Given:
2. public class Tshirt extends Thread {
3. public static void main(String[] args) {
4. System.out.print(Thread.currentThread() .getId() + " ");
5. Thread t1 = new Thread(new Tshirt());
6. Thread t2 = new Thread(new Tshirt());
7. t1.start();
8. t2.run();
9. }
10. public void run() {
11. for(int i = 0; i ＜ 2; i++)
12. System.out.print(Thread.currentThread() .getId() + " ");
13. } }
Which are true? (Choose all that apply.)