com.github.naviit.libs.common.util.CalendarUtil Maven / Gradle / Ivy
/************************************************************************
* Copyright 2017 by DTT - All rights reserved. *
************************************************************************/
package com.github.naviit.libs.common.util;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Collections;
import java.util.Comparator;
import java.util.Date;
import java.util.List;
/**
* Author: Dang Thanh Tung
* Email: [email protected]
* Created: 12/07/2017
*/
public class CalendarUtil {
private static final String TIME_FORMAT = "HH:mm:ss";
private static final SimpleDateFormat SDF = new SimpleDateFormat(TIME_FORMAT);
public static void toBeginDate(Calendar cal) {
cal.set(Calendar.HOUR_OF_DAY, 0);
cal.set(Calendar.MINUTE, 0);
cal.set(Calendar.SECOND, 0);
cal.set(Calendar.MILLISECOND, 0);
}
public static void toEndDate(Calendar cal) {
cal.set(Calendar.HOUR_OF_DAY, 23);
cal.set(Calendar.MINUTE, 59);
cal.set(Calendar.SECOND, 59);
cal.set(Calendar.MILLISECOND, 999);
}
/**
* Get current time with format HH:mm:ss
*/
public static String getCurrentTime() {
return SDF.format(Calendar.getInstance().getTime());
}
public static long getCurrentDateInMillis() {
Calendar cal = Calendar.getInstance();
return cal.getTimeInMillis();
}
public static long getBeginOfCurrentDateInMillis() {
Calendar cal = Calendar.getInstance();
toBeginDate(cal);
return cal.getTimeInMillis();
}
public static Calendar toCalendar(String dateString, String format) {
if(StringUtil.isEmpty(dateString)) return null;
DateFormat df = new SimpleDateFormat(format);
Calendar cal = Calendar.getInstance();
try {
Date date = df.parse(dateString);
cal.setTime(date);
} catch (ParseException e) {
e.printStackTrace();
return null;
}
return cal;
}
public static Date getDateNearCurrentMost(List dates) {
final long now = Calendar.getInstance().getTimeInMillis();
// Get date closest to "now"
Date closest = Collections.min(dates, new Comparator() {
@Override
public int compare(Date d1, Date d2) {
long diff1 = Math.abs(d1.getTime() - now);
long diff2 = Math.abs(d2.getTime() - now);
return Long.compare(diff1, diff2);
}
});
return closest;
}
public static long getDateInMillisecondsNearCurrentMost(List dates) {
final long now = Calendar.getInstance().getTimeInMillis();
// Get date closest to "now"
Long closest = Collections.min(dates, new Comparator() {
@Override
public int compare(Long d1, Long d2) {
long diff1 = Math.abs(d1.longValue() - now);
long diff2 = Math.abs(d2.longValue() - now);
return Long.compare(diff1, diff2);
}
});
return closest.longValue();
}
}