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

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

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文件Stu.java中<br>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;     } }