calendarutil.java

来自「数据库远程同步软件NetBeans项目源文件 项目采用Jdesktop集成组件」· Java 代码 · 共 132 行

package com.qixuan.jdbc.util;

import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;
import java.util.SimpleTimeZone;
import java.util.TimeZone;

public class CalendarUtil {
	private static Calendar calendar;
	private static Date nowdate;
	static {
		String[] ids = TimeZone.getAvailableIDs(8 * 60 * 60 * 1000);
		// if no ids were returned, something is wrong. get out.
		if (ids.length == 0)
			System.exit(0);

		// begin output
		System.out.println("Current Time");

		// create a Pacific Standard Time time zone
		SimpleTimeZone pdt = new SimpleTimeZone(8 * 60 * 60 * 1000, ids[8]);

		// set up rules for daylight savings time
		pdt.setStartRule(Calendar.MAY, 1, Calendar.SUNDAY, 2 * 60 * 60 * 1000);
		pdt.setEndRule(Calendar.NOVEMBER, -1, Calendar.SUNDAY,
				2 * 60 * 60 * 1000);

		// create a GregorianCalendar with the Pacific Daylight time zone
		// and the current date and time
		calendar = new GregorianCalendar(pdt);
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		nowdate = calendar.getTime();
		//calendar.add(Calendar.MONTH, 1);
	}

	public CalendarUtil() {
		super();
		// TODO Auto-generated constructor stub
	}

	public static Date getNowdate(Date date) {
		calendar.setTime(date);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}
	public static Date getFirstDay(Date date) {
		calendar.setTime(date);
		calendar.set(Calendar.DATE, 1);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}
	public static Date getNowdate(Date nowdate, int timeZone) {
		int hou = nowdate.getHours();
		nowdate.setHours(hou + timeZone);
		calendar.setTime(nowdate);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}

	public static Date getNowdate(int year, int month, int date) {
		calendar.set(year, month - 1, date);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}

	public static Date getNowdate(int year, int month, int date, int hrs,
			int min, int sec) {
		calendar.set(year, month - 1, date, hrs, min, sec);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}

	public static Date getNowdate() {
		return nowdate;
	}

	public static Calendar getCalendar() {
		return calendar;
	}

	public static void setCalendar(Calendar calendar) {
		CalendarUtil.calendar = calendar;
	}

	public static void setNowdate(Date nowdate) {
		CalendarUtil.nowdate = nowdate;
	}

	public static Date getNowdate(String strdate) {
		SimpleDateFormat bartDateFormat = new SimpleDateFormat("yyyy/MM/dd   HH:mm:ss");
		bartDateFormat.setLenient(false);
		try {
			nowdate = bartDateFormat.parse(strdate);
			System.out.println(nowdate.getTime());

		} catch (Exception e) {

		}
		return nowdate;
	}
	public static Date addMonth(Date date,int mon){
		calendar.setTime(date);	
		calendar.set(Calendar.DATE, 1);
		calendar.add(Calendar.MONTH, mon);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}
	public static Date addDate(Date date,int day){
		calendar.setTime(date);		
		calendar.add(Calendar.DATE, day);
		nowdate = calendar.getTime();
		Date trialTime = new Date();
		calendar.setTime(trialTime);
		return nowdate;
	}
}