dater.java

企业进销存源码

package com.web.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

/**
 * @author Administrator
 *
 * To change this generated comment edit the template variable "typecomment":
 * Window>Preferences>Java>Templates.
 * To enable and disable the creation of type comments go to
 * Window>Preferences>Java>Code Generation.
 */
public class Dater {
	private static String CurrentTime;
	private static String CurrentDate;
	/**
	 * Returns the currentTime.
	 * @return String
	 */
	public static String getCurrentTime() {
		Date NowDate = new Date();
		SimpleDateFormat formatter =
			new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
		CurrentTime = formatter.format(NowDate);
		return CurrentTime;
	}
	/**
	 * Returns the currentDate.
	 * @return String
	 */
	public static String getCurrentDate() {
		Date NowDate = new Date();
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
		CurrentDate = formatter.format(NowDate);
		return CurrentDate;
	}
	/**
	 * Returns the Compare Result
	 * if equals return "0".
	 * if before return "1".
	 * if after return "2".
	 * if error return "4".
	 * @return String
	 */
	public static String CompareDate(String SDate1, String SDate2) {
		Date DDate1, DDate2;
		SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
		try {
			DDate1 = formatter.parse(SDate1);
			DDate2 = formatter.parse(SDate2);

			if (DDate1.equals(DDate2)) {
				return "0";
			} else if (DDate1.before(DDate2)) {
				return "1";
			} else {
				return "2";
			}
		} catch (ParseException e) {
			e.printStackTrace();
			return "4";
		}

	}
	public static String getCurrentYear() {
		java.util.Date NowDate = new java.util.Date();

		SimpleDateFormat formatter = new SimpleDateFormat("yyyy");
		return formatter.format(NowDate);
	}
	public static String getCurrentMonth() {
		java.util.Date NowDate = new java.util.Date();

		SimpleDateFormat formatter = new SimpleDateFormat("MM");
		return formatter.format(NowDate);
	}
	public static String getCurrentDay() {
		java.util.Date NowDate = new java.util.Date();

		SimpleDateFormat formatter = new SimpleDateFormat("dd");
		return formatter.format(NowDate);
	}
	public static String getCurrentHour() {
		java.util.Date NowDate = new java.util.Date();

		SimpleDateFormat formatter = new SimpleDateFormat("HH");
		return formatter.format(NowDate);
	}

	public static String getYear(String yyyy_MM_dd) {
		return yyyy_MM_dd.substring(0, 4);
	}
	public static String getMonth(String yyyy_MM_dd) {
		return yyyy_MM_dd.substring(5, 7);
	}
	public static String getDay(String yyyy_MM_dd) {
		return yyyy_MM_dd.substring(8, 10);
	}

	public static String getyyyyMMddDate(String yyyy, String MM, String dd) {
		String result = "";
		result = yyyy + "-";

		if (MM.length() == 1) {
			result = result + "0" + MM;
		} else {
			result = result + MM;
		}

		result = result + "-";

		if (dd.length() == 1) {
			result = result + "0" + dd;
		} else {
			result = result + dd;
		}

		return result;
	}

	public static String dateAdd(String time1, int strTo) {
		try {
			SimpleDateFormat ft = new SimpleDateFormat("yyyy-MM-dd");
			Date date1 = ft.parse(time1);
			Calendar strDate = Calendar.getInstance(); //java.util包
			strDate.setTime(date1);

			strDate.add(strDate.DATE, strTo); //日期减 如果不够减会将月变动
			//生成 (年-月-日) 字符串
			String meStrDate =
				strDate.get(strDate.YEAR)
					+ "-"
					+ String.valueOf(strDate.get(strDate.MONTH) + 1)
					+ "-"
					+ strDate.get(strDate.DATE);
			return meStrDate;
		} catch (Exception e) {
			return time1;
		}
	}

	public static String getOnlyDate(String yyyy_MM_dd_HH_mm_ss) {
		return yyyy_MM_dd_HH_mm_ss.substring(0, 10);
	}

	public static void main(String args[]) {
	}

}