首页/ 题库 / [单选题]1. import java.util.的答案

1. import java.util.*;  2. public class Example {  3. public static void main(String[] args) {  4. // insert code here  5. set.add(new integer(2));  6. set.add(new integer(l));  7. System.out.println(set);  8. }  9. }  Which code, inserted at line 4, guarantees that this program will output [1,2]? ()

单选题
2022-09-30 13:52
A、 Set set = new TreeSet();
B、 Set set = new HashSet();
C、 Set set = new SortedSet();
D、 List set = new SortedList();
E、 Set set = new LinkedHashSet();
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正确答案
A

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