-- 作者:admin
-- 发布时间:2008/5/7 14:06:36
-- 作业之四:时间显示与日历
1、日历类的基本用法 class exec { public static void main(String args[]) { java.util.Calendar rightNow = java.util.Calendar.getInstance(); System.out.println(rightNow.getTime()); System.out.println("今年是"+rightNow.get(java.util.Calendar.YEAR)+"年"); String[] monthOfYear={"一","二","三","四","五","六","七","八","九","十","十一","十二"}; System.out.println("月份是"+monthOfYear[rightNow.get(java.util.Calendar.MONTH)]+"月"); System.out.println("日期是"+rightNow.get(java.util.Calendar.DATE)+"日"); String[] dayOfWeek={"日","一","二","三","四","五","六"}; System.out.println("今天是星期"+dayOfWeek[rightNow.get(java.util.Calendar.DAY_OF_WEEK)-1]); System.out.println("现在是"+rightNow.get(java.util.Calendar.HOUR_OF_DAY)+"小时"+rightNow.get(java.util.Calendar.MINUTE)+"分"+rightNow.get (java.util.Calendar.SECOND)+"秒"); System.out.println(java.text.DateFormat.getDateInstance(java.text.DateFormat.FULL).format(rightNow.getTime())); } }
2、格式化日历类 import java.text.DateFormat; import java.util.Date;
public class Time {
public static void main(String[] args) { Date d = new Date(); String s; s = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.LONG).format(d); System.out.println("现在日期和时间是:" + s); }
}
3、更为复杂的完整月日历程序(只能显示特定的月份) import java.util.*;
class exec { public static void main(String args[]) { System.out.println("日 一 二 三 四 五 六"); Calendar calendar = Calendar.getInstance(); calendar.set(2004, 9, 1); int day = calendar.get(Calendar.DAY_OF_WEEK) - 1; String a[] = new String[day + 31]; //存放号码的一维数组 for (int i = 0; i < day; i++) { a[i] = " "; } for (int i = day, n = 1; i < day + 31; i++) { if (n <= 9) a[i] = String.valueOf(n) + " "; else a[i] = String.valueOf(n); n++; } //打印数组 for (int i = 0; i < a.length; i++) { if (i % 7 == 0) { System.out.println(""); //换行 } System.out.print(" " + a[i]); } System.out.println(); } }
4、最为灵活的显示任何当前月份的月日历程序 import java.util.*;
public class exec { public static void main(String[] args) { java.text.DecimalFormat myformat = new java.text.DecimalFormat("00");// java.util.GregorianCalendar gregorianCalendar = new java.util.GregorianCalendar(); int maxDay = gregorianCalendar .getActualMaximum(gregorianCalendar.DAY_OF_MONTH); int year = gregorianCalendar.get(gregorianCalendar.YEAR); int month = gregorianCalendar.get(gregorianCalendar.MONTH) + 1; int day = gregorianCalendar.get(gregorianCalendar.DAY_OF_MONTH); int weekday = gregorianCalendar.get(gregorianCalendar.DAY_OF_WEEK); int hour = gregorianCalendar.get(gregorianCalendar.HOUR); int minite = gregorianCalendar.get(gregorianCalendar.MINUTE); int second = gregorianCalendar.get(gregorianCalendar.SECOND); int j = 1; System.out.println("今天是" + year + "年" + month + \'月\' + day + "日" + "星期" + (weekday - 1)); gregorianCalendar.set(gregorianCalendar.DAY_OF_MONTH, 1); int space = gregorianCalendar.get(gregorianCalendar.DAY_OF_WEEK); int counter = space - 1; String[] days = new String[counter + maxDay];
for (int i = 0; i < counter; i++) { days[i] = " "; } for (int i = counter; i < counter + maxDay; i++) { days[i] = myformat.format(j); j++; } System.out.print("日\\t一\\t二\\t三\\t四\\t五\\t六\\n"); int m = 1; for (int i = 0; i < counter + maxDay; i++) {
System.out.print("" + days[i] + "\\t"); if ((m++) % 7 == 0) System.out.print("\\n"); } } }
[此贴子已经被作者于2010-12-12 08:25:03编辑过]
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