多选题 Given:
2. import java.util.*;
3. public class Olives {
4. public static void main(String[] args) {
5. Set＜Integer＞ s = new TreeSet＜Integer＞();
6. s.add(23); s.add(42); s.add(new Integer(5));
7. Iterator i = s.iterator();
8. // while(System.out.print(i.next())) { }
9. // for(Integer i2: i) System.out.print(i2);
10. // for(Integer i3: s) System.out.print(i3);
11. // while(i.hasNext()) System.out.print(i.get());
12. // while(i.hasNext()) System.out.print(i.next());
13. } }
If lines 8-12 are uncommented, independently, which are true? (Choose all that apply.)