Java 集合框架ArrayList 储存自定义数组

package LinkedList;

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

import p.bean.Person;

public class ArrayListDemo {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ArrayList a1=new ArrayList();
		a1.add(new Person("李四1",21));
		a1.add(new Person("李四2",22));
		a1.add(new Person("李四3",23));
		a1.add(new Person("李四4",24));
		
		Iterator it=a1.iterator();
		
		while(it.hasNext()) {
			//System.out.println(((Person) it.next()).getName()+"::"+((Person) it.next()).getAge());//一条语句不可用两个next() 会取出 1 name 2 age 3 name 4 age
			Person p=(Person) it.next();//自定义对象别忘了取出 的时候做强转
			System.out.println(p.getAge()+"::"+p.getName());
		}
		
		a1.add(5);//a1.add(new Integer(5);
		
		
	}

}

package p.bean;

public class Person {
	private String name;
	private int age;
	
	
	

	public Person() {
		super();
		// TODO Auto-generated constructor stub
	}




	public Person(String name, int age) {
		super();
		this.name = name;
		this.age = age;
	}




	public String getName() {
		return name;
	}




	public void setName(String name) {
		this.name = name;
	}




	public int getAge() {
		return age;
	}




	public void setAge(int age) {
		this.age = age;
	}




	public static void main(String[] args) {
		// TODO Auto-generated method stub

	}

}