多选题 Given the following method signatures from ArrayList:
boolean add(E e)
protected void removeRange (int fromIndexInclusive, int toIndexExclusive)
int size()
and given:
2. import java.util.*;
3. public class MyUtil extends ArrayList {
4. public static void main(String[] args) {
5. MyUtil m = new MyUtil();
6. m.add("w"); m.add("x"); re.add("y"); m.add("z");
7. m.removeRange (1, 3);
8. System.out.print(m.size() + " ");
9. MyUtil m2 = new MyUtil2().go();
10. System.out.println(m2.size());
11. }
12. }
13. class MyUtil2{
14. MyUtil go() {
15. MyUtil m2 = new MyUtil();
16. m2.add("1"); m2.add("2"); m2.add("3");
17. m2.removeRange(1, 2);
18. return m2;
19. } }
What is the result?