com.pentahohub.nexus.util.DateUtils Maven / Gradle / Ivy

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package com.pentahohub.nexus.util;

import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class DateUtils {

	public static Calendar toCalendar(Date date) {
		if (date == null) {
			return null;
		}
		Calendar c = Calendar.getInstance();
		c.setTime(date);
		return c;
	}

	public static int getYear(Date date) {
		return toCalendar(date).get(Calendar.YEAR);
	}

	public static int getMonth(Date date) {
		return toCalendar(date).get(Calendar.MONTH) + 1;
	}

	public static int getDay(Date date) {
		return toCalendar(date).get(Calendar.DAY_OF_MONTH);
	}

	public static int getHour(Date date) {
		return toCalendar(date).get(Calendar.HOUR_OF_DAY);
	}

	public static int getMinute(Date date) {
		return toCalendar(date).get(Calendar.MINUTE);
	}

	public static int getSecond(Date date) {
		return toCalendar(date).get(Calendar.SECOND);
	}

	public static long getMillis(Date date) {
		return toCalendar(date).getTimeInMillis();
	}

	/**
	 * 获取一个月的天数
	 */
	public static int getDaysOfTheMonth(Date date) {
		int year = getYear(date);
		int month = getMonth(date) - 1;
		int day = getDay(date);
		int hour = getHour(date);
		int minute = getMinute(date);
		int second = getSecond(date);
		Calendar calendar = new GregorianCalendar(year, month, day, hour, minute, second);
		return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
	}

	public static Date parse(String date, String format) {
		if (StringUtils.hasText(date) && StringUtils.hasText(format)) {
			DateFormat df = new SimpleDateFormat(format);
			try {
				return df.parse(date);
			} catch (ParseException e) {
				throw new RuntimeException("Parse date exception");
			}
		}
		return null;
	}

	public static Date getNextDate(Date date, int days) {
		long time = date.getTime();
		time = time + days * 24 * 60 * 60 * 1000;
		return new Date(time);

	}

	public static String format(Date date, String format) {
		if (date == null) {
			return StringUtils.EMPTY;
		}
		return new SimpleDateFormat(format).format(date);
	}

	public static String format(long date, String pattern) {
		return format(new Date(date), pattern);
	}

}