List应用

 1 import java.util.ArrayList;
 2 import java.util.List;
 3 
 4 public class ListDemo {
 5 
 6     /**
 7      * @param args
 8      */
 9     public static void main(String[] args) {
10         // TODO Auto-generated method stub
11         List<Song> songs = new ArrayList<Song>();
12         songs.add(new Song("花好月圆",""));
13         songs.add(new Song("传奇",""));
14         songs.add(0,new Song("伤不起",""));
15         System.out.println(songs);
16     }
17 
18 }
19 class Song{
20     String name;
21     String fileName;
22     
23     public Song(String name) {
24         this.name = name;
25     }
26 
27     public Song(String name, String fileName) {
28         this.name = name;
29         this.fileName = fileName;
30     }
31     @Override
32     public String toString() {
33         return this.name;
34     }
35 }

结果：s