/*
题目:输出任意年份任意月份的日历表(公元后)
思路:
1.已知1年1月1日是星期日,1 % 7 = 1 对应的是星期日,2 % 7 = 2 对应的是星期一,以此类推
2.计算当年以前所有天数+当年当月1号之前所有天数
b.闰年的判断方法year % 400 == 0 || (year % 100 != 0 && year % 4 == 0)若为真,则为闰年否则为平年
c.定义平年/闰年数组,包含各月天数
d.遍历数组求和,计算当年当月前总天数
e.当年以前所有天数+当年当月前总天数+1即为1年1月1日到当年当月1日的总天数
3.总天数对7取模,根据结果判断当月1号是星期几,输出空白区域
4.输出当月日历表,逢星期六换行
*/
import java.util.Scanner
class FindMonthList {
public static void main(String[] args){
Scanner sc = new Scanner(System.in)
System.out.println("请输入年份:")
int year = sc.nextInt() //年份
if (year < 1) { //判断非法输入年份
System.out.println("输入错误!")
return
}
System.out.println("请输入月份:")
int month = sc.nextInt() //月份
if (month < 1 || month > 12) { //判断非法输入月份
System.out.println("输入错误!")
return
}
//输出表头
System.out.println("-------" + year + " 年 " + month + " 月 " + "-------")
System.out.println()
System.out.println("日 一 二 三 四 五 六")
//计算当前年份以前所有天数beforeYearTotalDay每4年一个闰年,闰年366天,平年365天
int beforeYearTotalDay = ((year - 1) / 4 * 366) + (year-1 - ((year - 1) / 4)) * 365
int[] arrLeapYear = {0,31,29,31,30,31,30,31,31,30,31,30,31} //闰年各月天数 int数组
int[] arrNormalYear = {0,31,28,31,30,31,30,31,31,30,31,30,31} //平年各月天数 int数组
int beforeMonthTotalDay = 0 //定义本年当月之前月份的总天数
if (year % 400 == 0 || (year % 100 != 0 && year % 4 == 0)) { //判断当前年份是否是闰年
for (int i = 0 i < month i ++ ) { //for循环计算当月之前总天数
//计算当前月份之前的所有天数
beforeMonthTotalDay = beforeMonthTotalDay + arrLeapYear[i]
}
//判断当月1日是星期几
int totalDay = beforeYearTotalDay + beforeMonthTotalDay + 1
int week = totalDay % 7//已知1年1月1日是星期日,即模7得1对应的是星期日
for (int i = 0 i < (week - 1 + 7) % 7 i ++) { //如果写成i < (week-1)会出现i<-1的情况
System.out.print(" ")//输出开头空白
}
for (int i = 1 i <= arrLeapYear[month] i ++ ) { //for循环输出各月天数
System.out.print(i + " ")
if (i < 10 ) { //小于10的数补一个空格,以便打印整齐
System.out.print(" ")
}
if (i % 7 == ((7-(week - 1)) % 7 ) || i == arrLeapYear[month]) {//每逢星期六/尾数换行
System.out.println()
}
}
} else { //不是闰年就是平年
for (int i = 0 i < month i ++ ) { //for循环计算出当月之前月份总天数
beforeMonthTotalDay = beforeMonthTotalDay + arrNormalYear[i]
}
//判断当月1日是星期几
int totalDay = beforeYearTotalDay + beforeMonthTotalDay + 1
int week = totalDay % 7//已知1年1月1日是星期日,即模7得1对应的是星期日
for (int i = 0 i < (week - 1 + 7) % 7 i ++) { //如果写成i < (week-1)会出现i<-1的情况
System.out.print(" ")//输出开头空白
}
for (int i = 1 i <= arrNormalYear[month] i ++ ) {//for循环输出各月天数
System.out.print(i + " ")
if (i < 10 ) { //小于10的数补一个空格,以便打印整齐
System.out.print(" ")
}
if (i % 7 == ((7-(week - 1)) % 7 ) || i == arrNormalYear[month]) {//每逢星期六/尾数换行
System.out.println()
}
}
}
}
}
效果：
我这里两个类，你跑起来看看，一个是计算农历的，一个是拿来显示的。import java.util.*
/**
* 农历计算
*
* @author xysource
*
*/
public class LauarUtil
{
private static String[] daySTrPreArray = { "初", "十", "廿", "卅", " " }
/**
* 月份
*/
private static String[] dayStrArray = { "", "一", "二", "三", "四", "五", "六",
"七", "八", "九", "十", "十一", "十二" }
// private static String[] weekStrArray = { "", "日", "一", "二", "三", "四",
// "五", "六" }
final static long[] lunarInfo = new long[] { 0x04bd8, 0x04ae0, 0x0a570,
0x054d5, 0x0d260, 0x0d950, 0x16554, 0x056a0, 0x09ad0, 0x055d2,
0x04ae0, 0x0a5b6, 0x0a4d0, 0x0d250, 0x1d255, 0x0b540, 0x0d6a0,
0x0ada2, 0x095b0, 0x14977, 0x04970, 0x0a4b0, 0x0b4b5, 0x06a50,
0x06d40, 0x1ab54, 0x02b60, 0x09570, 0x052f2, 0x04970, 0x06566,
0x0d4a0, 0x0ea50, 0x06e95, 0x05ad0, 0x02b60, 0x186e3, 0x092e0,
0x1c8d7, 0x0c950, 0x0d4a0, 0x1d8a6, 0x0b550, 0x056a0, 0x1a5b4,
0x025d0, 0x092d0, 0x0d2b2, 0x0a950, 0x0b557, 0x06ca0, 0x0b550,
0x15355, 0x04da0, 0x0a5d0, 0x14573, 0x052d0, 0x0a9a8, 0x0e950,
0x06aa0, 0x0aea6, 0x0ab50, 0x04b60, 0x0aae4, 0x0a570, 0x05260,
0x0f263, 0x0d950, 0x05b57, 0x056a0, 0x096d0, 0x04dd5, 0x04ad0,
0x0a4d0, 0x0d4d4, 0x0d250, 0x0d558, 0x0b540, 0x0b5a0, 0x195a6,
0x095b0, 0x049b0, 0x0a974, 0x0a4b0, 0x0b27a, 0x06a50, 0x06d40,
0x0af46, 0x0ab60, 0x09570, 0x04af5, 0x04970, 0x064b0, 0x074a3,
0x0ea50, 0x06b58, 0x055c0, 0x0ab60, 0x096d5, 0x092e0, 0x0c960,
0x0d954, 0x0d4a0, 0x0da50, 0x07552, 0x056a0, 0x0abb7, 0x025d0,
0x092d0, 0x0cab5, 0x0a950, 0x0b4a0, 0x0baa4, 0x0ad50, 0x055d9,
0x04ba0, 0x0a5b0, 0x15176, 0x052b0, 0x0a930, 0x07954, 0x06aa0,
0x0ad50, 0x05b52, 0x04b60, 0x0a6e6, 0x0a4e0, 0x0d260, 0x0ea65,
0x0d530, 0x05aa0, 0x076a3, 0x096d0, 0x04bd7, 0x04ad0, 0x0a4d0,
0x1d0b6, 0x0d250, 0x0d520, 0x0dd45, 0x0b5a0, 0x056d0, 0x055b2,
0x049b0, 0x0a577, 0x0a4b0, 0x0aa50, 0x1b255, 0x06d20, 0x0ada0 }
final public static int lYearDays(int y)// ====== 传回农历 y年的总天数
{
int i, sum = 348
for (i = 0x8000i >0x8i >>= 1)
{
if ((lunarInfo[y - 1900] &i) != 0)
sum += 1
}
return (sum + leapDays(y))
}
final public static int leapDays(int y)// ====== 传回农历 y年闰月的天数
{
if (leapMonth(y) != 0)
{
if ((lunarInfo[y - 1900] &0x10000) != 0)
return 30
else
return 29
}
else
return 0
}
final public static int leapMonth(int y)// ====== 传回农历 y年闰哪个月 1-12 , 没闰传回 0
{
return (int) (lunarInfo[y - 1900] &0xf)
}
final public static int monthDays(int y, int m)// ====== 传回农历 y年m月的总天数
{
if ((lunarInfo[y - 1900] &(0x10000 >>m)) == 0)
return 29
else
return 30
}
final public static String AnimalsYear(int y)// ====== 传回农历 y年的生肖
{
final String[] Animals = new String[] { "鼠", "牛", "虎", "兔", "龙", "蛇",
"马", "羊", "猴", "鸡", "狗", "猪" }
return Animals[(y - 4) % 12]
}
final public static String cyclicalm(int num)// ====== 传入 月日的offset 传回干支,
// 0=甲子
{
final String[] Gan = new String[] { "甲", "乙", "丙", "丁", "戊", "己", "庚",
"辛", "壬", "癸" }
final String[] Zhi = new String[] { "子", "丑", "寅", "卯", "辰", "巳", "午",
"未", "申", "酉", "戌", "亥" }
return (Gan[num % 10] + Zhi[num % 12])
}
final public static String cyclical(int y)// ====== 传入 offset 传回干支, 0=甲子
{
int num = y - 1900 + 36
return (cyclicalm(num))
}
final public long[] Lunar(int y, int m)// 传出农历.year0 .month1 .day2
// .yearCyl3
// .monCyl4
// .dayCyl5 .isLeap6
{
final int[] year20 = new int[] { 1, 4, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 }
final int[] year19 = new int[] { 0, 3, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 }
final int[] year2000 = new int[] { 0, 3, 1, 2, 1, 2, 1, 1, 2, 1, 2, 1 }
long[] nongDate = new long[7]
int i = 0, temp = 0, leap = 0
Date baseDate = new Date(1900, 1, 31)
Date objDate = new Date(y, m, 1)
long offset = (objDate.getTime() - baseDate.getTime()) / 86400000L
if (y <2000)
offset += year19[m - 1]
if (y >2000)
offset += year20[m - 1]
if (y == 2000)
offset += year2000[m - 1]
nongDate[5] = offset + 40
nongDate[4] = 14
for (i = 1900i <2050 &&offset >0i++)
{
temp = lYearDays(i)
offset -= temp
nongDate[4] += 12
}
if (offset <0)
{
offset += temp
i--
nongDate[4] -= 12
}
nongDate[0] = i
nongDate[3] = i - 1864
leap = leapMonth(i)// 闰哪个月
nongDate[6] = 0
for (i = 1i <13 &&offset >0i++)
{
// 闰月
if (leap >0 &&i == (leap + 1) &&nongDate[6] == 0)
{
--i
nongDate[6] = 1
temp = leapDays((int) nongDate[0])
}
else
{
temp = monthDays((int) nongDate[0], i)
}
// 解除闰月
if (nongDate[6] == 1 &&i == (leap + 1))
nongDate[6] = 0
offset -= temp
if (nongDate[6] == 0)
nongDate[4]++
}
if (offset == 0 &&leap >0 &&i == leap + 1)
{
if (nongDate[6] == 1)
{
nongDate[6] = 0
}
else
{
nongDate[6] = 1
--i
--nongDate[4]
}
}
if (offset <0)
{
offset += temp
--i
--nongDate[4]
}
nongDate[1] = i
nongDate[2] = offset + 1
return nongDate
}
final public static long[] calElement(int y, int m, int d)
// 传出y年m月d日对应的农历.year0 .month1 .day2 .yearCyl3 .monCyl4 .dayCyl5 .isLeap6
{
long[] nongDate = new long[7]
int i = 0, temp = 0, leap = 0
Date baseDate = new Date(0, 0, 31)
Date objDate = new Date(y - 1900, m - 1, d)
long offset = (objDate.getTime() - baseDate.getTime()) / 86400000L
nongDate[5] = offset + 40
nongDate[4] = 14
for (i = 1900i <2050 &&offset >0i++)
{
temp = lYearDays(i)
offset -= temp
nongDate[4] += 12
}
if (offset <0)
{
offset += temp
i--
nongDate[4] -= 12
}
nongDate[0] = i
nongDate[3] = i - 1864
leap = leapMonth(i)// 闰哪个月
nongDate[6] = 0
for (i = 1i <13 &&offset >0i++)
{
// 闰月
if (leap >0 &&i == (leap + 1) &&nongDate[6] == 0)
{
--i
nongDate[6] = 1
temp = leapDays((int) nongDate[0])
}
else
{
temp = monthDays((int) nongDate[0], i)
}
// 解除闰月
if (nongDate[6] == 1 &&i == (leap + 1))
nongDate[6] = 0
offset -= temp
if (nongDate[6] == 0)
nongDate[4]++
}
if (offset == 0 &&leap >0 &&i == leap + 1)
{
if (nongDate[6] == 1)
{
nongDate[6] = 0
}
else
{
nongDate[6] = 1
--i
--nongDate[4]
}
}
if (offset <0)
{
offset += temp
--i
--nongDate[4]
}
nongDate[1] = i
nongDate[2] = offset + 1
return nongDate
}
public static String getchina(int day)
{
if (day == 10)
return "初十"
if (day == 20)
return "二十"
if (day == 30)
return "三十"
String a = daySTrPreArray[(int) ((day) / 10)]
//System.out.println(a)
a += dayStrArray[(int) (day % 10)]
return a
}
public static String getLauar(Calendar cld)
{
int year = cld.get(Calendar.YEAR)
int month = cld.get(Calendar.MONTH) + 1
int day = cld.get(Calendar.DAY_OF_MONTH)
long[] lauarStrArray = calElement(year, month, day)
String monthStr = dayStrArray[(int) (lauarStrArray[1])]
return monthStr + "月" + getchina((int) (lauarStrArray[2]))//AnimalsYear(1989)+"年 农历" +
}
public static void main(String[] args)
{
Calendar cld = Calendar.getInstance()
// for (int i = 0i <145i++) {
System.out.println(getLauar(cld))
// cld.add(Calendar.DAY_OF_MONTH, 1)
// }
}
}
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