集合框架(List存储自定义对象并遍历)

核心代码块：

package cn.ithelei.com;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

/*
 * 存储自定义对象并遍历,用普通for循环。(size()和get()结合)
 */
public class ListDemo3 {
public static void main(String[] args) {
    // 创建集合对象
    List list = new ArrayList();
    
    // 创建学生对象
    Student s1 = new Student("林黛玉", 18);
    Student s2 = new Student("刘姥姥", 88);
    Student s3 = new Student("王熙凤", 38);

    // 把学生添加到集合中
    list.add(s1);
    list.add(s2);
    list.add(s3);

    // 遍历
    // 迭代器遍历
    Iterator it = list.iterator();
    while (it.hasNext()) {
        Student s = (Student) it.next();
        System.out.println(s.getName() + "---" + s.getAge());
    }
    System.out.println("--------");

    // 普通for循环
    for (int x = 0; x < list.size(); x++) {
        Student s = (Student) list.get(x);
        System.out.println(s.getName() + "---" + s.getAge());
        }
    }
}

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