1 import java.util.*;
2
3 public class BasicGeneric {
4 public static void main(String[] args) {
5 List<String> c = new ArrayList<String>();
6 c.add("aaa");
7 c.add("bbb");
8 c.add("ccc");
9 for(int i=0; i<c.size(); i++) {
10 String s = c.get(i);
11 System.out.println(s);
12 }
13
14 Collection<String> c2 = new HashSet<String>();
15 c2.add("aaa"); c2.add("bbb"); c2.add("ccc");
16 for(Iterator<String> it = c2.iterator(); it.hasNext(); ) {
17 String s = it.next();
18 System.out.println(s);
19 }
20 }
21 }
22
23 class MyName implements Comparable<MyName> {
24 int age;
25
26 public int compareTo(MyName mn) {
27 if(this.age > mn.age) return 1;
28 else if(this.age < mn.age) return -1;
29 else return 0;
30 }
31 }
