Given:
3. public class Fiji {
4. static Fiji base;
5. Fiji f;
6. public static void main(String[] args) {
7. new Fiji() .go();
8. // do more stuff
9. }
10. void go() {
11. Fiji f1 = new Fiji();
12. base = f1;
13. Fiji f2 = new Fiji();
14. f1.f = f2;
15. Fiji f3 = f1.f;
16. f2.f = f1;
17. base = null; f1 = null; f2 = null;
18. // do stuff
19. } }
Which are true (Choose all that apply.)

多项选择题Given:3. public class Race {4. public static void main(String[] args)5. Horse h = new Horse();6. Thread t1 = new Thread(h, Andi );7. Thread t2 = new Thread(h, Eyra );8. new Race() .go(t2);9. t1.start();10. t2.start();11. }12. void go(Thread t) {t.start(); }13. }14. class Horse implements Runnable {15. public void run() {16. System.out.print(Thread.currentThread() .getName() + );17. } }What is the result (Choose all that apply.)

单项选择题Given the proper import statement(s) and given:4. Map＜String, String＞ h = new Hashtable＜String, String＞();5. String[] k = { 1 , 2 , 3 , null};6. String[] v = { a , b , null, d };7.8. for(int i=0; i＜4; i++) {9. h.put(k[i], v[i]);10. System.out.print(h. get (k [i]) + );11. }12. System.out.print(h.size() + + h.values() + n );What result is most likely