Java-IO流【登录注册小项目】

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package com.caoyibo.log;import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Scanner;public class main {public static void main(String[] args) {System.out.println("1、登录  2、注册");int select = new Scanner(System.in).nextInt();if (select == 1){System.out.println("进入登录模式");}else{System.out.println("进入注册模式");}System.out.println("账号：");String username = new Scanner(System.in).nextLine();System.out.println("密码");String password = new Scanner(System.in).nextLine();switch (select) {case 1:try(BufferedReader reader = new BufferedReader(new FileReader("F:\\cesi\\name.txt"))){String line;while ((line = reader.readLine()) != null){String[] user = line.split(",");if(user[0].equals(username)&& user[1].equals(password)){System.out.println("登录成功");break;}System.out.println("登录失败");}}catch (Exception e){e.printStackTrace();}break;case 2:System.out.println("注册模式");try(BufferedWriter writer = new BufferedWriter(new FileWriter("F:\\cesi\\name.txt"))) {writer.write(username + "," + password);} catch (Exception e) {e.printStackTrace();}break;}}
}