ArrayList 的用法

1、简单的学生对象

学生类

package com.test7;

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

    public Student(){}
    public Student(String name,int  age){
        this.age=age;
        this.name=name;
    }
    public void  SetAge(int age){
        this.age=age;
    }
    public int GetAge(){
        return age;
    }
    public void SetName(String name){
        this.name=name;
    }
    public String GetName(){
        return name;
    }
}

测试类

package com.test7;

import java.util.ArrayList;
import java.util.Scanner;

public class ArrayListDemo {
    public static void main(String[] args) {
        ArrayList stu = new ArrayList();
        setArry(stu);
        setArry(stu);
        setArry(stu);
        for (int i = 0; i < stu.size(); i++) {
            Student s1 = stu.get(i);
            System.out.println(s1.GetName() + "," + s1.GetAge());
        }
    }

    public static void setArry(ArrayList stu) {
        Student s = new Student();
        Scanner sc = new Scanner(System.in);
        System.out.println("请输入姓名：");
        String name = sc.nextLine();
        System.out.println("请输入年龄：");
        int age = sc.nextInt();
        s.SetName(name);
        s.SetAge(age);
        stu.add(s);
    }
}