com.github.srang.datafactory.util.DateUtil Maven / Gradle / Ivy
package com.github.srang.datafactory.util;
/*-
* #%L
* Data Factory
* %%
* Copyright (C) 2017 srang
* %%
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* #L%
*/
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import java.util.TimeZone;
/**
* DateUtil class.
*
* @author srang
*/
public class DateUtil {
static SimpleDateFormat dateTimeFormatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'");
static SimpleDateFormat dateFormatter = new SimpleDateFormat("yyyy-MM-dd");
/**
* getCurrentDate.
*
* @return a {@link java.util.Date} object.
*/
public static Date getCurrentDate() {
Calendar cal = Calendar.getInstance();
return cal.getTime();
}
/**
* getCurrentDateTimeString.
*
* @return a {@link java.lang.String} object.
*/
public static String getCurrentDateTimeString(){
return dateTimeFormatter.format(getCurrentDate());
}
/**
* getDateTimeFromString.
*
* @param date a {@link java.lang.String} object.
* @return a {@link java.util.Date} object.
* @throws java.text.ParseException if any.
*/
public static Date getDateTimeFromString(String date) throws ParseException{
if (date == null){
return null;
}
if (date.equals("")){
return null;
}
if (date.equals("null")){
return null;
}
return dateTimeFormatter.parse(date);
}
/**
* getDateOnlyFromString.
*
* @param date a {@link java.lang.String} object.
* @return a {@link java.util.Date} object.
* @throws java.text.ParseException if any.
*/
public static Date getDateOnlyFromString(String date) throws ParseException {
if (date == null){
return null;
}
if (date.equals("")){
return null;
}
if (date.equals("null")){
return null;
}
return dateFormatter.parse(date);
}
/**
* getDateTimeFromString.
*
* @param date a {@link java.lang.String} object.
* @param currentDateFormat a {@link java.text.SimpleDateFormat} object.
* @return a {@link java.util.Date} object.
* @throws java.text.ParseException if any.
*/
public static Date getDateTimeFromString(String date, SimpleDateFormat currentDateFormat) throws ParseException{
if (date == null){
return null;
}
if (date.equals("")){
return null;
}
if (date.equals("null")){
return null;
}
return currentDateFormat.parse(date);
}
/**
* getStringFromDateTime.
*
* @param date a {@link java.util.Date} object.
* @return a {@link java.lang.String} object.
*/
public static String getStringFromDateTime(Date date){
if (date == null){
return null;
}
return dateTimeFormatter.format(date);
}
/**
* getStringFromDateTime.
*
* @param date a {@link java.util.Date} object.
* @param currentDateFormat a {@link java.text.SimpleDateFormat} object.
* @return a {@link java.lang.String} object.
*/
public static String getStringFromDateTime(Date date, SimpleDateFormat currentDateFormat){
if (date == null){
return null;
}
return currentDateFormat.format(date);
}
/**
* getDateOnlyStringFromDateTime.
*
* @param date a {@link java.util.Date} object.
* @return a {@link java.lang.String} object.
*/
public static String getDateOnlyStringFromDateTime(Date date){
if (date == null){
return null;
}
return dateFormatter.format(date);
}
/**
* getMaxDate.
*
* @return a {@link java.util.Date} object.
*/
public static Date getMaxDate(){
Calendar cal = Calendar.getInstance();
cal.add(Calendar.YEAR, 3000);
return cal.getTime();
//return new Date(Long.MAX_VALUE);
}
/**
* getTomorrowDate.
*
* @return a {@link java.util.Date} object.
*/
public static Date getTomorrowDate(){
Calendar cal = Calendar.getInstance();
cal.add(Calendar.DAY_OF_YEAR, 1);
return cal.getTime();
}
/**
* UTCtoDefaultTimeZone.
*
* @param date a {@link java.util.Date} object.
* @return a {@link java.util.Date} object.
*/
public static Date UTCtoDefaultTimeZone(Date date){
if (date != null){
Calendar calendar = Calendar.getInstance();
calendar.setTime(date);
TimeZone toTimeZone = TimeZone.getDefault();
int offSetfromUTCtoDefault = toTimeZone.getRawOffset();
if (offSetfromUTCtoDefault < 0){
//add a day
calendar.add(Calendar.HOUR, 24);
}else if (offSetfromUTCtoDefault > 86400000){
//remove a day
calendar.add(Calendar.HOUR, -24);
}
return calendar.getTime();
}else
return null;
}
/**
* Method compares two dates for equality ignoring the time component.
*
* @param date1 a {@link java.util.Date} object.
* @param date2 a {@link java.util.Date} object.
* @return a boolean.
*/
public static boolean areDatesEqualIgnoreTime(Date date1, Date date2)
{
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
boolean outcome = false;
int year1 = cal1.get(Calendar.YEAR);
int mon1 = cal1.get(Calendar.MONTH);
int day1 = cal1.get(Calendar.DAY_OF_MONTH);
int year2 = cal2.get(Calendar.YEAR);
int mon2 = cal2.get(Calendar.MONTH);
int day2 = cal2.get(Calendar.DAY_OF_MONTH);
if (
year1 == year2
&& mon1 == mon2
&& day1 == day2
)
{
outcome = true;
}
return outcome;
} //
}
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