集合类作业

 1 package com.zuoye;
 2 
 3 import java.util.*;
 4 
 5 public class jihe {
 6 
 7     public static void main(String[] args) {
 8         
 9         List<Object>  a=new ArrayList<Object>();
10         
11         for(int i=1;i<=100;i++)
12         {
13             a.add(i);
14         }
15         
16         System.out.println("遍历方式一");
17         for(Object t: a)
18         {
19             System.out.print(" "+t);
20         }
21         System.out.println("");
22         
23         System.out.println("遍历方式二");
24     
25         for(int j=0;j<a.size();j++)
26         {
27             System.out.print(" " +a.get(j));
28         }
29         System.out.println("");
30         
31         System.out.println("遍历方式三:迭代器");
32         
33         Iterator<Object> it=a.iterator();
34         
35         while(it.hasNext())
36         {
37             Object t=it.next();
38             
39             System.out.print(" " +t);
40         }
41         
42         System.out.println("");
43         
44         System.out.println("移除索引位置为10的对象的结果：");
45         
46         //移除索引位置为10的对象
47         
48         a.remove(10);
49         
50         for(Object t: a)
51         {
52             System.out.print(" "+t);
53         }
54     }
55 
56 }