•  设计一个 家庭收支记账软件
• 需求说明

1. 模拟实现基于文本界面的《家庭记账软件》
2. 该软件能够记录家庭的收入、支出，并能够打印收支明细表。
3. 项目采用分级菜单方式。主菜单如下： 

分析

• 需要使用Scanner输入语句，if-else判断语句，while、for循环；
• 使用ArraysList容器来存储支出或收入的说明和金额；

代码实现

目录

分析

代码实现

运行结果

---

package hw;

import java.util.ArrayList;
import java.util.List;

public class FamilyAccount {
    private int sum;
    private List sout = new ArrayList();
    private List sin = new ArrayList();
    private List iout = new ArrayList();
    private List iin = new ArrayList();
     public FamilyAccount() {
        this.sum=10000;//默认基本金
    }
    public void PrintMainMenu(){//打印主菜单
        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.查询本基金");
        System.out.println("              5.退   出");
        System.out.println("-----------------------------------------");
    }
    public void DetailOfIncomeAndExpenditure(){//收支明细
         for(int i=0;i 
package hw;
import java.util.Scanner;
public class hw5 {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        FamilyAccount fa = new FamilyAccount();
        System.out.println("欢迎来到家庭收支记账软件");
        System.out.println("按任意键进入主菜单");
        scan.nextInt();
        fa.PrintMainMenu();
        over: while (true) {
            System.out.print("请选择（1-5）：");
            switch (scan.nextInt()) {
                case 1:
                    fa.DetailOfIncomeAndExpenditure();
                    fa.GetGrossIncome();
                    break;
                case 2:
                    while(true) {
                        System.out.print("本次收入金额：");
                        int income = scan.nextInt();
                        System.out.print("本次收入说明：");
                        String iexplain = scan.next();
                        fa.input(income, iexplain);
                        if(scan.nextInt()==1) break;
                    }
                    break;
                case 3:
                    while(true) {
                        System.out.print("本次支出金额：");
                        int expend = scan.nextInt();
                        System.out.print("本次支出说明：");
                        String oexplain = scan.next();
                        fa.expend(expend, oexplain);
                        if(scan.nextInt()==1) break;
                    }
                    break;
                case 4:
                    fa.GetGrossIncome();
                    System.out.print("按任意键返回主菜单：");
                    scan.nextInt();
                    fa.PrintMainMenu();
                    break;
                case 5:
                    break over;//直接结束while外循环
            }
        }
        System.out.println("已退出！");
    }
}
 
运行结果