字符流BufferedReader的小应用2，把txt文件里面的数据转化为学生对象并添加到集合，使用了Split方法

注意我们在对字符串
001,海洋,22,河南
进行处理的时候需要使用String 的split方法进行切割 返回一个String数组

Split案例

   String str = "one:two:three";
      String[] result = str.split(":");
      for(String s: result) {
        System.out.println(s);
      }
    输出结果:
    one
    two
    three

文本里面的内容：吧这些数据转化为Student对象

Student类

public class Student {

    private String id;
    private String name;
    private int age;
    private String address;

    public Student() {
    }

    public Student(String id, String name, int age, String address) {
        this.id = id;
        this.name = name;
        this.age = age;
        this.address = address;
    }


    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    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 String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }


    @Override
    public String toString() {

        String data ;
        data = id+","+name+","+Integer.toString(age)+","+address;
        return data;

    }

main方法

 public static void main(String[] args) throws IOException {


        //字符输入流对象
        FileReader fr = new FileReader("C:\Users\Administrator\IdeaProjects\Day07\a.txt");
        //字符缓冲输入流对象
        BufferedReader br = new BufferedReader(fr);

        //创建集合对象
        ArrayList arrayList = new ArrayList<>();

        //开始读数据
        String data ;
        while ((data = br.readLine()) != null){

             //开始使用String的split方法对字符串进行处理
             String stu_s[] = data.split(",") ;

             //开始创建学生对象
            Student s  = new Student(stu_s[0],stu_s[1],Integer.parseInt(stu_s[2]) ,stu_s[3]);

            //添加到集合
            arrayList.add(s);

        }


        //释放资源
        br.close();

        //遍历集合
        for (Student s : arrayList){

            System.out.println(s.getId()+"--"+s.getName()+"--"+s.getAge()+"--"+s.getAddress());

        }



    }