ArrlyList集合

public class Person
{
    private String name;//,sex;
    private int age;
    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;
    }

    
}

定义一个Person类，包含姓名年龄性别身高体重等数据，并提供相应的get和set方法。

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

public class Test
{
    
    public static void main(String[] args)
    {
        Person pA = new Person("A", 20);
        Person pB = new Person("B", 21);
        Person pC = new Person("C", 22);
        Person pD = new Person("D", 24);
        
        ArrayList<Person> al = new ArrayList<Person>();
        
        al.add(pA);
        al.add(pB);
        al.add(pC);
        al.add(pD);
        
        for (Iterator<Person> iterator = al.iterator(); iterator.hasNext();)  //迭代器
        {
            Person p = (Person) iterator.next(); //转换成person类
            
            System.out.println(p.getName()+"     "+p.getAge());
            
        }
    }
    
}