家庭记录收支系统

package Yanghui;
import java.util.Scanner;
public class Yanghui {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int y =0;
        String[][] arr = new String[7][4];
        int sum = 10000;
        boolean x = true;
        int line = 0 ;
        while(x){
            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n");
            System.out.print("请选择(1-4):");
            int number = sc.nextInt();
        switch(number){
            case 1:
                System.out.println("------------收支明细------------");
                System.out.println("收支tt收支金额t说明tt账户金额");
                for(int i = 0; i