打印日历在后面几月格式出错

根据年份和此年第一天是星期几打印日历在第四月或者第五月格式会出错

用代码块功能插入代码，请勿粘贴截

import java.util.Scanner;
public class Test5_29 {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        System.out.print("Enter the year");
        int year = input.nextInt();
        System.out.print("Represents the day of the week on which the first day of the year falls");
        int dayOfWeek = input.nextInt();
//       计算当月总天数
        int days;
        int month;
        String Month = " ";
        boolean b =year%4==0&&year%100!=0||year%400== 0;
        for ( month = 1; month <= 12; month++) {
            if (month == 2) {
                if (b) {
                    days = 29;
                } else {
                    days = 28;
                }
            } else if (month == 4 || month == 6 || month == 9 || month == 11) {
                days = 30;
            } else {
                days = 31;
            }
            switch (month) {
                case 1 -> Month = "January";
                case 2 -> Month = "February";
                case 3 -> Month = "March";
                case 4 -> Month = "April";
                case 5 -> Month = "May";
                case 6 -> Month = "June";
                case 7 -> Month = "July";
                case 8 -> Month = "August";
                case 9 -> Month = "September";
                case 10 -> Month = "October";
                case 11 -> Month = "November";
                case 12 -> Month = "December";
            }
            // 3.打印当月日历
            System.out.println("\t\t" + Month + " " + year + "\t\t");
            System.out.println("———————————————————————————————————");
            System.out.println("\tSun\tMon\tTue\tWed\tThu\tFri\tSat\t");
            switch (dayOfWeek) {
                case 1 -> System.out.print("\t");
                case 2 -> System.out.print("\t\t");
                case 3 -> System.out.print("\t\t\t");
                case 4 -> System.out.print("\t\t\t\t");
                case 5 -> System.out.print("\t\t\t\t\t");
                case 6 -> System.out.print("\t\t\t\t\t\t");
                case 7 -> System.out.print("");
            }
            //如果是星期六，换行
            for (int k = 1; k <= days; k++) {
                if (k % 7 == 7-dayOfWeek) {
                    System.out.println("\t"+k+"\t");
                } else {
                    System.out.print( "\t"+k );
                }
            }
            System.out.println();//打印完一个月之后换行
            dayOfWeek = dayOfWeek + days % 7;//计算下一个月第一天是星期几
        }
    }
}

运行结果

改最后一行代码就可以了

// 比如2022年一月是31天第一天是星期六 那么下个月就是 ((31 % 7) + 6) % 7 = 星期2
dayOfWeek = (days%7 + dayOfWeek) % 7;