java实现日历(某年的日历,某月的日历)用户完全自定义
用户可以自定义打印某一年的年历,即:把某一年的日历全部打印出来 如把2013年的年历打印出来如下: 复制代码 代码如下: January 2013 --------------------------------------------- Sun Mon Tue Wed Thu Fri Sat 2 3 4 5 7 8 9 10 11 12 14 15 16 17 18 19 21 22 23 24 25 26 28 29 30 31 Febuary 2013 March 2013
May 2013 Jun 2013
August 2013 Septermber 2013 October 2013 November 2013 December 2013 当然用户如果想单独打印某个月的日历,同样是可以实现的 如打印:2014年1月份的日历 复制代码 代码如下: 日 一 二 三 四 五 六 2 3 4 6 7 8 9 10 11 13 14 15 16 17 18 20 21 22 23 24 25 27 28 29 30 31 用户还可以实现打印当前的月份的日历 今天是:2013-04-27,则当前月份的日历打印如下: 复制代码 代码如下: 日 一 二 三 四 五 六 2 3 4 5 6 8 9 10 11 12 13 15 16 17 18 19 20 22 23 24 25 26 :)27(: 29 30 是的,你没有看错,在27的那里有一个标志,表示是当天的日期..... 下面进入代码部分: ======================================================== 代码部分: ======================================================== /UUUUUU_Test/src/com/b510/date/HongtenDate.java 复制代码 代码如下: /** * */ package com.b510.date; import java.text.SimpleDateFormat; import java.util.Calendar; import java.util.Date; import java.util.GregorianCalendar; /** * 一个日期处理类,在该类中,构造函数<code>HongtenDate()</code>,系统会默认设置年份为当年<br> * 而<code>HongtenDate(int year)</code>,则可以自定义年份<br> * * <pre> * HongtenDate date = new HongtenDate(); * </pre> * * or<br> * * <pre> * HongtenDate hd = new HongtenDate(2014); * </pre> * * 调用<code>printCalendar()</code>可以打印一年的日期<br> * 调用<code>printCurrentMonth()</code>可以打印当前月的日期<br> *,当然,你也可以调用<br> * <code>printMonthOfYear()</code>设置一个参数,进行打印某个月的日期<br> * 这里提供一些参考方案:<br> * * <pre> * // 无参数,系统默认去当前年份 * HongtenDate date = new HongtenDate(); * date.printCalendar(); * date.printCurrentMonth(); * date.printMonthOfYear(4); * </pre> * * or<br> * * <pre> * // 设置为2014年 * HongtenDate hd = new HongtenDate(2014); * hd.printCurrentMonth(); * hd.printMonthOfYear(1); * </pre> * * @date 2013-4-27 * @author hongten * */ public class HongtenDate { // MONTHS // ============================================ public static final String JANUARY = "January"; public static final String FEBUARY = "Febuary"; public static final String MARCH = "March"; public static final String APRIL = "April"; public static final String MAY = "May"; public static final String JUN = "Jun"; public static final String JULY = "July"; public static final String AUGUST = "August"; public static final String SEPTERMBER = "Septermber"; public static final String OCTOBER = "October"; public static final String NOVEMBER = "November"; public static final String DECEMBER = "December"; /** * 年份 */ private int year; /** * 一月一日星期几(eg:2013-01-01-->星期二,所以<code>whatDayOnJanuaryOne = 2;</code>) */ private int whatDayOnJanuaryOne; // main // ====================================== public static void main(String[] args) throws Exception { // 无参数,系统默认去当前年份 HongtenDate date = new HongtenDate(); // date.printCalendar(); date.printCurrentMonth(); // date.printMonthOfYear(4); // 设置为2014年 HongtenDate hd = new HongtenDate(2014); // hd.printCurrentMonth(); // hd.printMonthOfYear(1); } // 无参数,系统默认去当前年份 public HongtenDate() { Calendar cal = Calendar.getInstance(); this.year = cal.get(Calendar.YEAR); try { setWhatDayOnJanuaryOne(getJanuaryOne(year)); } catch (Exception e) { e.printStackTrace(); } } // 有参数,设置年份 public HongtenDate(int year) { this.year = year; try { setWhatDayOnJanuaryOne(getJanuaryOne(year)); } catch (Exception e) { e.printStackTrace(); } } /** * 打印某个月的所有日期 * * @param mon * 月份 * @throws Exception */ public void printMonthOfYear(int mon) throws Exception { if (mon < 1 || mon > 12) { System.out.println("你输入的月份[" + mon + "]不对,请检查在进行...."); return; } GregorianCalendar now = new GregorianCalendar(); // 获得一个Date对象 SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date date = sdf.parse(year + "-" + mon + "-01"); // 设置当前时间 now.setTime(date); // 从日期中取得当前的月 int month = now.get(Calendar.MONTH); // 设置now的日期为1 now.set(Calendar.DAY_OF_MONTH,1); // 得到now是一周的第几天 int week = now.get(Calendar.DAY_OF_WEEK); // 打印日历头部标示 System.out.println("日t一t二t三t四t五t六"); // 打印当前日期前面的空格 for (int i = Calendar.SUNDAY; i < week; i++) { System.out.print("t"); } // 打印日历主体 while (now.get(Calendar.MONTH) == month) { int day = now.get(Calendar.DAY_OF_MONTH); // 对输出的日历进行对齐,小于10的加上一个空格 if (day < 10) { System.out.print(" " + day + "t"); } else { System.out.print("" + day + "t"); } // 如果是周六,进行换行 if (week == Calendar.SATURDAY) { System.out.println(); } // 每次输出日期后,将日期增加一天 now.add(Calendar.DAY_OF_MONTH,1); // 重新获得一周的第几天 week = now.get(Calendar.DAY_OF_WEEK); } } /** * 打印当前月的所有日期,这个不会因用户设置的年份而改变 */ public void printCurrentMonth() { GregorianCalendar now = new GregorianCalendar(); // 获得一个Date对象 Date date = new Date(); // 设置当前时间 now.setTime(date); // 从日期中取得当前的日 int toDay = now.get(Calendar.DAY_OF_MONTH); // 从日期中取得当前的月 int month = now.get(Calendar.MONTH); // 设置now的日期为1 now.set(Calendar.DAY_OF_MONTH,1); // 得到now是一周的第几天 int week = now.get(Calendar.DAY_OF_WEEK); // 打印日历头部标示 System.out.println("日t一t二t三t四t五t六"); // 打印当前日期前面的空格 for (int i = Calendar.SUNDAY; i < week; i++) { System.out.print("t"); } // 打印日历主体 while (now.get(Calendar.MONTH) == month) { int day = now.get(Calendar.DAY_OF_MONTH); // 对输出的日历进行对齐,小于10的加上一个空格 if (day < 10) { // 如果是当前日期,加上标示 if (day == toDay) { System.out.print(":)" + day + "(:t"); } else { System.out.print(" " + day + "t"); } } else { // 如果是当前日期,加上标示 if (day == toDay) { System.out.print(":)" + day + "(:t"); } else { System.out.print("" + day + "t"); } } // 如果是周六,进行换行 if (week == Calendar.SATURDAY) { System.out.println(); } // 每次输出日期后,将日期增加一天 now.add(Calendar.DAY_OF_MONTH,1); // 重新获得一周的第几天 week = now.get(Calendar.DAY_OF_WEEK); } } /** * 获取year这一年的一月一号是星期几 * * @param year * 年份 * @return * @throws Exception */ public int getJanuaryOne(int year) throws Exception { int[] weekDays = { 0,1,2,3,4,5,6 }; Calendar cal = Calendar.getInstance(); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); Date dt = sdf.parse(year + "-01-01"); cal.setTime(dt); int w = cal.get(Calendar.DAY_OF_WEEK) - 1; if (w < 0) w = 0; return weekDays[w]; } /** * 打印一年的所有月份 */ public void printCalendar() { for (int i = 1; i <= 12; i++) { String month = getMonth(i); printTitle(month); // 打印有31天的月份 if (i == 1 || i == 3 || i == 5 || i == 7 || i == 8 || i == 10 || i == 12) { print31(); } // 打印有30天的月份 else if (i == 4 || i == 6 || i == 9 || i == 11) { print30(); } // 打印二月份 else if (i == 2) { printFebuary(); } System.out.println(); } } // 打印格式 // ============================================== start /** * 打印二月份,每一年的二月份可能不相同,所以要单独处理 */ protected void printFebuary() { if (this.year % 4 == 0) { // 闰年 printLeapYear(); } else { // 平年 printNonleapYear(); } } /** * 闰年二月份打印格式 */ private void printLeapYear() { for (int j = 1; j <= 29; j++) { String tmp = ""; if (j == 1) { for (int k = 1; k <= this.whatDayOnJanuaryOne % 7; k++) { tmp = tmp + " "; } tmp = tmp + " " + j + " "; if (this.whatDayOnJanuaryOne == 6) { System.out.println(tmp); } else { System.out.print(tmp); } } else if (j > 1 && j < 29) { if ((this.whatDayOnJanuaryOne + j) % 7 == 0) { System.out.println(" " + j); } else { if (j < 10) { System.out.print(" " + j + " "); } else { System.out.print(" " + j + " "); } } } else if (j == 29) { System.out.println(" " + j); this.whatDayOnJanuaryOne = ((this.whatDayOnJanuaryOne + j) % 7); } } } /** * 打印平年二月份格式 */ private void printNonleapYear() { for (int j = 1; j <= 28; j++) { String tmp = ""; if (j == 1) { for (int k = 1; k <= this.whatDayOnJanuaryOne % 7; k++) { tmp = tmp + " "; } tmp = tmp + " " + j + " "; if (this.whatDayOnJanuaryOne == 6) { System.out.println(tmp); } else { System.out.print(tmp); } } else if (j > 1 && j < 28) { if ((this.whatDayOnJanuaryOne + j) % 7 == 0) { System.out.println(" " + j); } else { if (j < 10) { System.out.print(" " + j + " "); } else { System.out.print(" " + j + " "); } } } else if (j == 28) { System.out.println(" " + j); this.whatDayOnJanuaryOne = ((this.whatDayOnJanuaryOne + j) % 7); } } } /** * 打印有30天的月份 */ protected void print30() { for (int j = 1; j <= 30; j++) { String tmp = ""; if (j == 1) { for (int k = 1; k <= this.whatDayOnJanuaryOne % 7; k++) { tmp = tmp + " "; } tmp = tmp + " " + j + " "; if (this.whatDayOnJanuaryOne == 6) { System.out.println(tmp); } else { System.out.print(tmp); } } else if (j > 1 && j < 30) { if ((this.whatDayOnJanuaryOne + j) % 7 == 0) { System.out.println(" " + j); } else { if (j < 10) { System.out.print(" " + j + " "); } else { System.out.print(" " + j + " "); } } } else if (j == 30) { System.out.println(" " + j); this.whatDayOnJanuaryOne = ((this.whatDayOnJanuaryOne + j) % 7); } } } /** * 打印有31天的月份 */ protected void print31() { for (int j = 1; j <= 31; j++) { String tmp = ""; if (j == 1) { for (int k = 1; k <= this.whatDayOnJanuaryOne % 7; k++) { tmp = tmp + " "; } tmp = tmp + " " + j + " "; if (this.whatDayOnJanuaryOne == 6) { System.out.println(tmp); } else { System.out.print(tmp); } } else if (j > 1 && j < 31) { if ((this.whatDayOnJanuaryOne + j) % 7 == 0) { System.out.println(" " + j); } else { if (j < 10) { System.out.print(" " + j + " "); } else { System.out.print(" " + j + " "); } } } else if (j == 31) { System.out.println(" " + j); this.whatDayOnJanuaryOne = ((this.whatDayOnJanuaryOne + j) % 7); } } } /** * 打印每个月的标题 * * @param month */ protected void printTitle(String month) { System.out.println(" " + month + " " + this.year + " "); System.out.println("---------------------------------------------"); System.out.println(" Sun Mon Tue Wed Thu Fri Sat"); } // 打印格式 // ============================================== end /** * 获取月份的英文名称 * * @param m * 月份的数字表示 * @return */ public String getMonth(int m) { String month = ""; switch (m) { case 1: month = JANUARY; break; case 2: month = FEBUARY; break; case 3: month = MARCH; break; case 4: month = APRIL; break; case 5: month = MAY; break; case 6: month = JUN; break; case 7: month = JULY; break; case 8: month = AUGUST; break; case 9: month = SEPTERMBER; break; case 10: month = OCTOBER; break; case 11: month = NOVEMBER; break; case 12: month = DECEMBER; break; } return month; } public int getYear() { return year; } public void setYear(int year) { this.year = year; } public int getWhatDayOnJanuaryOne() { return whatDayOnJanuaryOne; } public void setWhatDayOnJanuaryOne(int whatDayOnJanuaryOne) { this.whatDayOnJanuaryOne = whatDayOnJanuaryOne; } } 您可能感兴趣的文章:
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