java(集合)练习

需求：用集合记录三个人,并遍历循环。

文件:Student.java中

import java.util.ArrayList;

public class Student {
    public static void main(String[] args){
        ArrayList<Stu> list=new ArrayList<>();
        Stu s =new Stu("ayue",20);
        Stu s1 =new Stu("a",21);
        Stu s2 =new Stu("b",22);
        list.add(s);
        list.add(s1);
        list.add(s2);
        for(int i =0;i<list.size();i++){
            Stu St=list.get(i);
            System.out.println(St.getAge()+"岁"+St.getName());
        }
    }
}

文件Stu.java中

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

    public Stu(){

    }
    public Stu(String name ,int age){
        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;
    }
}