用Java制作一个家庭收支记账软件

软件功能如图

import java.util.Scanner;

public class Demo5 {
    public static void main(String[] args) {
        int balance = 10000;
        String inn =" ";
        Scanner scan = new Scanner(System.in);
        a:while (true) {
            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.登记指出  ");
            System.out.println("  4.退   出  ");
            System.out.println(" 请选择（1-4）: ");
            int s = scan.nextInt();
            switch (s) {
                case 2:
                    System.out.println("请登记收入");
                    int sr = scan.nextInt();
                    balance += sr;
                    String srmx = scan.next();
                    inn += "金额："+ sr + "  收入说明: "+srmx+"n";
                    break;
                case 3:
                    System.out.println("请登记支出");
                    int zc = scan.nextInt();
                    balance -= zc;
                    String zcmx = scan.next();
                    inn += "金额："+ zc+  "  支出说明: "+zcmx+"n";
                    break;
                case 4:
                    break a;
                case 1:
                    System.out.println("收支明细");
                    System.out.println(balance);
                    System.out.println(inn);
            }
        }
    }
}