package StudentIO;

import java.io.*;
import java.util.ArrayList;
import java.util.Scanner;

public class AlterDate {
    //根据id修改数据
    //思路：1、定义输入id，把数据从TXT文件中取出来
    //      2、取出来的数据存入model之后按照一定的规则存入集合，之后遍历，根据id得出对应的数据，对应修改
    //      3、把修改后的数据重新存入txt
    public static void Alter() throws IOException {
        System.out.println("请输入id");
        Scanner sc = new Scanner(System.in);
        String id = sc.next();

        BufferedReader BR = new BufferedReader(new FileReader("nba.txt"));
        String lines;
        ArrayList<StudentModel> ob = new ArrayList<StudentModel>();
        while ((lines = BR.readLine())!=null){
            String[] arr = lines.split(",");
            StudentModel model = new StudentModel();
            model.setId(arr[0]);
            model.setName(arr[1]);
            model.setAge(arr[2]);
            model.setHobby(arr[3]);
            //数据放入ob里面
            ob.add(model);
        }
        //遍历：
        BufferedWriter bw = new BufferedWriter(new FileWriter("nba.txt"));
        int i;
        for (i = 0;i<ob.size();i++){
            StudentModel mod = ob.get(i);
            if (id.equals(mod.getId())){
                System.out.println("请输入名字：");
                String name = sc.next();
                mod.setName(name);
                System.out.println("请输入age：");
                String age = sc.next();
                mod.setAge(age);
                System.out.println("请输入hobby：");
                String hobby = sc.next();
                mod.setHobby(hobby);
                StringBuilder sb = new StringBuilder();
                sb.append(mod.getId()).append(",").append(mod.getName()).append(",").append(mod.getAge()).append(",").append(mod.getHobby());
                bw.write(sb.toString());
                bw.newLine();
                bw.flush();
            }
        }
        sc.close();
        bw.close();



    }

}