项目一

尚硅谷_宋红康_Project1.pdf

package com.atguigu.work;
import java.util.Scanner;
public class Practice6 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int balance = 10000;
        String details = "收支\t账户金额\t收支金额\t说 明\n";
        //菜单目录
            label:
            for (;;){
                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)：");
                int choose = sc.nextInt();
                switch (choose) {
                    case 1:
                        System.out.println(details);
                        break;
                    case 2:
                        System.out.print("本次收入金额：");
                        int inCome = sc.nextInt();
                        System.out.print("本次收入说明：");
                        String inComeExplanation = sc.next();
                        balance += inCome;
                        String inComeDetails = "收入\t" + balance + "\t\t" + inCome + "\t\t\t" + inComeExplanation + "\n";
                        details = details + inComeDetails;
                        break;
                    case 3:
                        System.out.print("本次支出金额：");
                        int outCome = sc.nextInt();
                        System.out.print("本次支出说明：");
                        String outComeExplanation = sc.next();
                        balance -= outCome;
                        String outComeDetails = "支出\t" + balance + "\t\t" + outCome + "\t\t\t" + outComeExplanation + "\n";
                        details = details + outComeDetails;
                        //System.out.println(details);
                        break;
                    case 4:
                        System.out.println("是否确定退出（y/n）:");
                        String tuiChu = sc.next();
                        if (tuiChu.equals("y")) {
                            System.out.println("再见！！！");
                            break label;
                        } else {
                        break;}
                    default:
                        System.out.println("输入有问题，请重新输入。");
                        break;
                }
            }
    }
}
//这我写的

项目问题：字符串相等应该用equals，不能用==。