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云代码 - java代码库

基础 日历 可实现切换到上、下月份的功能

2019-03-02 作者: 阳光彩虹小白驴举报

[java]代码库

import java.util.Scanner;
 
public class code1 {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        System.out.println("请输入你想查询的年份(至少为1900年):");
        int year = in.nextInt();
        System.out.println("请输入你想查询的月份:");
        int month = in.nextInt();
        int flag = 0;
        while (flag == 0) {
            int sum = 0;
            int num = 0;
            for (int date = 1900; date < year; date++) {
                if (date % 4 == 0 && date % 100 != 0 || date % 400 == 0) {
                    sum = sum + 366;
                } else {
                    sum = sum + 365;
                }
            }
            for (int date1 = 1; date1 < month; date1++) {
                if (date1 == 1 || date1 == 3 || date1 == 5 || date1 == 7 || date1 == 8 || date1 == 10 || date1 == 12) {
                    sum = sum + 31;
                } else if (date1 == 2) {
                    if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
                        sum = sum + 29;
                    } else {
                        sum = sum + 28;
                    }
                } else {
                    sum = sum + 30;
                }
            }
            sum = sum + 1;
            System.out.println("**************************");
            System.out.println("\t下面是"+year+"年"+month+"月"+"的日历");
            System.out.println("**************************");
            System.out.println("日\t一\t二\t三\t四\t五\t六");
            for (int i = 0; i < (sum % 7); i++) {
                System.out.print(" \t");
            }
            if (month == 1 || month == 3 || month == 5 || month == 7 || month == 8 || month == 10 | month == 12) {
                num = 31;
            } else if (month == 2) {
                if (year % 4 == 0 && year % 100 != 0 || year % 400 == 0) {
                    num = 29;
                } else {
                    num = 28;
                }
            } else {
                num = 30;
            }
 
            for (int i = 1; i <= num; i++, sum++) {
                System.out.print(i);
                if (sum % 7 == 6) {
                    System.out.println();
                } else {
                    System.out.print("\t");
                }
            }
            System.out.println();
            System.out.println("请选择1、2、3");
            System.out.println("1、观看上一个月的日历");
            System.out.println("2、观看下一个月的日历");
            System.out.println("3、结束");
            int select = in.nextInt();
            if (select == 1) {
                month = month - 1;
                if (month == 0) {
                    year = year - 1;
                    month = 12;
                }
                flag = 0;
            } else if (select == 2) {
                month = month + 1;
                if (month == 13) {
                    year = year + 1;
                    month = 1;
                }
                flag = 0;
            } else {
                flag = 1;
            }
        }
    }
}


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