package org.act.tstream.utils;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;
import org.apache.log4j.Logger;
/**
*
* @author longda
*
*/
public class TimeFormat {
public static Logger log = Logger.getLogger(TimeFormat.class);
public static final long ONE_SECOND_MILLISECONDS = 1000;
public static final long ONE_MINUTE_SECONDS = 60;
public static final long ONE_HOUR_MINUTES = 60;
public static final long ONE_DAY_HOURS = 24;
public static final long ONE_MINUTE_MILLISECONDS = ONE_MINUTE_SECONDS
* ONE_SECOND_MILLISECONDS;
public static final long ONE_HOUR_MILLISECONDS = ONE_HOUR_MINUTES
* ONE_MINUTE_MILLISECONDS;
public static final long ONE_DAY_MILLISECONDS = ONE_DAY_HOURS
* ONE_HOUR_MILLISECONDS;
public static Date convertDate(String dateStr, String format) {
Date date = null;
try {
if (format != null) {
SimpleDateFormat simpleDateFormat = new SimpleDateFormat(format);
date = simpleDateFormat.parse(dateStr);
} else {
date = new Date(dateStr);
}
} catch (Exception ex) {
log.error("Failed to convert " + dateStr + " to Date, format:"
+ format);
return null;
}
return date;
}
public static String convertStr(Date date, String format) {
String ret = null;
try {
SimpleDateFormat sdf = new SimpleDateFormat(format);
ret = sdf.format(date);
} catch (Exception e) {
log.error("Failed to convert " + date + " to String, format:"
+ format);
return null;
}
return ret;
}
public static Date getYear(String dateStr) {
return convertDate(dateStr, "yyyy");
}
public static String getYear(Date date) {
return convertStr(date, "yyyy");
}
public static Date getMonth(String dateStr) {
return convertDate(dateStr, "yyyyMM");
}
public static String getMonth(Date date) {
return convertStr(date, "yyyyMM");
}
public static Date getDay(String dateStr) {
return convertDate(dateStr, "yyyyMMdd");
}
public static String getDay(Date date) {
return convertStr(date, "yyyyMMdd");
}
public static Date getHour(String dateStr) {
return convertDate(dateStr, "yyyyMMddHH");
}
public static String getHour(Date date) {
return convertStr(date, "yyyyMMddHH");
}
public static Date getMinute(String dateStr) {
return convertDate(dateStr, "yyyyMMddHHmm");
}
public static String getMinute(Date date) {
return convertStr(date, "yyyyMMddHHmm");
}
public static Date getSecond(String dateStr) {
return convertDate(dateStr, "yyyyMMddHHmmss");
}
public static String getSecond(Date date) {
return convertStr(date, "yyyyMMddHHmmss");
}
public static String getHourMin(String dateStr) {
Date date = convertDate(dateStr, null);
if (date == null) {
return null;
}
return getHourMin(date);
}
public static String getHourMin(Date date) {
String output = null;
try {
SimpleDateFormat sdf = new SimpleDateFormat("HH:mm");
output = sdf.format(date);
} catch (Exception e) {
return null;
}
return output;
}
public static Date getToday() {
Date now = new Date();
String todayStr = getDay(now);
return getDay(todayStr);
}
public static Date getYesterday() {
Date now = new Date();
Calendar yesterdayCal = Calendar.getInstance();
yesterdayCal.setTime(now);
yesterdayCal.add(Calendar.DATE, -1);
String yesterdayStr = getDay(yesterdayCal.getTime());
return getDay(yesterdayStr);
}
/**
* get the days number pass from 1970-00-00
*
* @return
*/
public static long getDayNum(Date date) {
long passMs = date.getTime() + (8 * 1000 * 60 * 60);
return (passMs / 1000 / 60 / 60 / 24);
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Date date = new Date();
String dateStr = getDay(date);
Date newDate = getDay(dateStr);
System.out.println("new date:" + newDate);
Date current = new Date();
Calendar tomorrow = Calendar.getInstance();
tomorrow.setTime(current);
tomorrow.add(Calendar.DATE, 1);
tomorrow.set(Calendar.AM_PM, Calendar.AM);
tomorrow.set(Calendar.HOUR, 2);
tomorrow.set(Calendar.MINUTE, 0);
Date startTime = tomorrow.getTime();
long hourdiff = (startTime.getTime() - current.getTime())
/ ONE_HOUR_MILLISECONDS;
System.out.println("Current:" + current + ", tomorrow" + startTime
+ ", diff hour" + hourdiff);
}
}