Java基础知识强化之集合框架笔记24：ArrayList存储自定义对象并遍历

 1 package cn.itcast_01;
 2 
 3 public class Student {
 4     private String name;
 5     private int age;
 6 
 7     public Student() {
 8         super();
 9     }
10 
11     public Student(String name, int age) {
12         super();
13         this.name = name;
14         this.age = age;
15     }
16 
17     public String getName() {
18         return name;
19     }
20 
21     public void setName(String name) {
22         this.name = name;
23     }
24 
25     public int getAge() {
26         return age;
27     }
28 
29     public void setAge(int age) {
30         this.age = age;
31     }
32 
33 }

 1 package cn.itcast_01;
 2 
 3 import java.util.ArrayList;
 4 import java.util.Iterator;
 5 
 6 /*
 7  * ArrayList存储自定义对象并遍历
 8  */
 9 public class ArrayListDemo2 {
10     public static void main(String[] args) {
11         // 创建集合对象
12         ArrayList array = new ArrayList();
13 
14         // 创建学生对象
15         Student s1 = new Student("武松", 30);
16         Student s2 = new Student("鲁智深", 40);
17         Student s3 = new Student("林冲", 36);
18         Student s4 = new Student("杨志", 38);
19 
20         // 添加元素
21         array.add(s1);
22         array.add(s2);
23         array.add(s3);
24         array.add(s4);
25 
26         // 遍历
27         Iterator it = array.iterator();
28         while (it.hasNext()) {
29             Student s = (Student) it.next();
30             System.out.println(s.getName() + "---" + s.getAge());
31         }
32 
33         System.out.println("----------------");
34 
35         for (int x = 0; x < array.size(); x++) {
36             // ClassCastException 注意，千万要搞清楚类型
37             // String s = (String) array.get(x);
38             // System.out.println(s);
39 
40             Student s = (Student) array.get(x);
41             System.out.println(s.getName() + "---" + s.getAge());
42         }
43     }
44 }