????????ArrayList????????????
1 package chapter11;
2 import java.util.ArrayList;
3
4 public class TestArrayList {
5
6     public static void main(String[] args) {
7         // TODO Auto-generated method stub
8         ArrayList<String> cityList=new ArrayList<String>();
9         cityList.add("London");
10         cityList.add("Denver");
11         cityList.add("Paris");
12         cityList.add("Miami");
13         cityList.add("Seoul");
14         cityList.add("Tokyo");
15
16         System.out.println("List size is "+cityList.size()+
17                 " Is Miami in the list? "+cityList.contains("Miami")+
18                 " The location of Denver in the list? "+cityList.indexOf("Denver")+
19                 " Is the list empty? "+cityList.isEmpty());
20
21         cityList.add(2?? "Xian");
22         cityList.remove("Miami");
23         cityList.remove(1);
24
25         System.out.println(cityList.toString());
26
27         for(int i=cityList.size()-1;i>=0;i--){
28             System.out.print(cityList.get(i)+" ");
29         }
30         System.out.println();
31
32
33
34
35     }
36
37 }
????????????cityList????????????÷???<String>??????Eclipse??????棬????????
??????????????????????????ArrayList?????????????????List?????????????????
????????????????????ArrayList????????????????????????????????????????????????????????????洢??????????????Object????????????ó?????????????鷳??
?????????ArrayList????洢?????????