- import java.util.ArrayList;
- import java.util.Collections;
- import java.util.List;
- public class MainClass {
- public static void main(String args[]) throws Exception {
- List list = new ArrayList();
- list.add("A");
- list.add("B");
- list.add("C");
- list = Collections.unmodifiableList(list);
- list.add(1, "G");
- System.out.println(list);
- }
- }
复制代码 |
|