简介

该项目主要用来练习，Java的变量，运算符，分支结构和循环结构的知识点。
程序界面如下：

登记收入

登记支出


收支明细

程序退出

代码实现

package project;import java.util.Scanner;import static java.lang.System.exit;/*** ClassName: Account* Package: project* Description: 家庭收支记账软件(简易版)** @Author: Ethan* @Create 2023/10/24 20:50* @Version 1.0*/
public class Account {public static void main(String[] args) {home();Scanner scanner = new Scanner(System.in);int btn = scanner.nextInt();String detail = "";int balance = 0;while( true ) {switch (btn) {case 1:if(detail.equals("")) {System.out.println("暂无记录！");} else {System.out.println("-------------------当前收支明细记录-------------------");System.out.println("收支\t账户金额\t收支金额\t说明");System.out.println(detail);}break;case 2:System.out.println("收入金额:");int in = scanner.nextInt();balance += in;System.out.println("收入说明:");String inExplain = scanner.next();detail += ("收入\t" + balance + "\t" + in + "\t" + inExplain + "\n");break;case 3:System.out.println("支出金额:");int out = scanner.nextInt();if( balance >= out){balance -= out;System.out.println("支出说明:");String outExplain = scanner.next();detail += ("支出\t" + balance + "\t" + out + "\t" + outExplain + "\n");} else {System.out.println("余额不足！");}break;case 4:System.out.println("确定退出吗？(Y/N)");char confirm = scanner.next().toLowerCase().charAt(0);if(confirm == 'y') {System.out.println("系统退出");exit(0);}default:System.out.println("输入有误！");}home();btn = scanner.nextInt();}}/*** @ description: 用来打印程序主界面* @ return: void无返回值*/public static void home() {System.out.println("-------------------家庭收支记账软件-------------------");System.out.println("                   1.收支明细");System.out.println("                   2.登记收入");System.out.println("                   3.登记支出");System.out.println("                   4.退出");System.out.println("                   请选择(1~4):");}
}