DateUtil time tool and dateutil Tool

DateUtil time tool and dateutil Tool

Package com. ruisi. core. utils;

Import java. text. ParseException;
Import java. text. SimpleDateFormat;
Import java. util. Calendar;
Import java. util. Date;
Import java. util. GregorianCalendar;

Public final class DateUtil {

/** Default year, month, and day */
Public static final String defaultPattern = "yyyy-MM-dd ";

/** Hour12HMSPattern: year, month, day, hour, minute, second, 12-hour */
Public static final String hour12HMSPattern = "yyyy-MM-dd hh: mm: ss ";

/** Hour12HMPattern, in 12-hour format */
Public static final String hour12HMPattern = "yyyy-MM-dd hh: mm ";

/** Hour12HPattern, in 12-hour format */
Public static final String hour12HPattern = "yyyy-MM-dd hh ";

/** Hour24HMSPattern: year, month, day, hour, minute, second, 24-hour format */
Public static final String hour24HMSPattern = "yyyy-MM-dd HH: mm: ss ";

/** Hour24HMPattern, in 24-hour format */
Public static final String hour24HMPattern = "yyyy-MM-dd HH: mm ";

/** Hour24HPattern in 24-hour format */
Public static final String hour24HPattern = "yyyy-MM-dd HH ";

Public static String daysBetween (Date startDate, Date endDate ){
Float d = endDate. getTime ()-startDate. getTime ();
Float dd = d/86400000f;
Int ddd = (int) dd;

Float hh = (dd-ddd) * 24;
Int hhh = (int) hh;

Float mm = (hh-hhh) * 60;
Int mmm = (int) mm;

Float ss = (mm-mmm) * 60;
Int sss = (int) ss;
Return ddd + "day" + hhh + "Hour" + mmm + "Minute" + sss + "second ";
}

/**
* Returns the current date string of the preset Format.
*/
Public static String getToday (){
Date today = new Date ();
Return format (today );
}

Public static String getYestoday (){
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (new Date ());
Cal1.add (Calendar. DATE,-1 );
Return format (cal1.getTime ());
}

Public static String getTheDayBeforeYestoday (){
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (new Date ());
Cal1.add (Calendar. DATE,-2 );
Return format (cal1.getTime ());
}

Public static String getpreviusday3 (){
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (new Date ());
Cal1.add (Calendar. DATE,-3 );
Return format (cal1.getTime ());
}

Public static String getpreviusday4 (){
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (new Date ());
Cal1.add (Calendar. DATE,-4 );
Return format (cal1.getTime ());
}

/**
* Format Date into a string using the preset Format
*/
Public static String format (Date date ){
Return format (date, defaultPattern );
}

/**
* Format Date to a string using the Format parameter.
*/
Public static String format (Date date, String pattern ){
String returnValue = "";

If (date! = Null ){
SimpleDateFormat df = new SimpleDateFormat (pattern );
ReturnValue = df. format (date );
}

Return (returnValue );
}

/**
* Convert the string to Date using the preset format
*/
Public static Date parse (String strDate) throws ParseException {
Return parse (strDate, defaultPattern );
}

Public static Date parse (String strDate, String pattern)
Throws ParseException {
SimpleDateFormat df = new SimpleDateFormat (pattern );
Return df. parse (strDate );
}

/**
* Increase the number of whole months on the date
*/
Public static Date addMonth (Date date, int n ){
Calendar cal = Calendar. getInstance ();
Cal. setTime (date );
Cal. add (Calendar. MONTH, n );
Return cal. getTime ();
}

/**
* Add a day to the date
*/
Public static Date addDay (Date date, int n ){
Calendar cal = Calendar. getInstance ();
Cal. setTime (date );
Cal. add (Calendar. DATE, n );
Return cal. getTime ();
}

Public static String formatDateTime (Date date ){
SimpleDateFormat outFormat = new SimpleDateFormat ("yyyy-MM-dd HH: mm: ss ");
Return outFormat. format (date );
}

@ SuppressWarnings ("static-access ")
Public static String getEndOfMonth (String year, String month ){
Calendar cal = Calendar. getInstance ();
Cal. set (cal. YEAR, Integer. parseInt (year ));
Cal. set (cal. MONTH, Integer. parseInt (month)-1 );
Return cal. getActualMaximum (cal. DAY_OF_MONTH) + "";
}

Public static String addDays (String sdate, int n) throws ParseException
{
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (parse (sdate, defaultPattern ));
Cal1.add (Calendar. DATE, n );
Return format (cal1.getTime ());

}

Public static String getFirstOfMonth () throws ParseException {
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (new Date ());
Cal1.set (5, 1 );
Return format (cal1.getTime ());

}

Public static String getFirstOfMonth (String sDate) throws ParseException {
Calendar cal1 = Calendar. getInstance ();
Cal1.setTime (parse (sDate, defaultPattern ));
Cal1.set (5, 1 );
Return format (cal1.getTime ());

}

/**
* Obtain the year
*
* @ Param sdate
* @ Return String
*/
Public static String getYear (String sdate ){
String [] date = sdate. split ("-");
Return date [0];
}

/**
* Obtain the month
*
* @ Param sdate
* @ Return String
*/
Public static String getMonth (String sdate ){
String [] date = sdate. split ("-");
Return date [1];
}

Public static String getCurrentYear (){
Calendar cale = Calendar. getInstance ();
Return Integer. toString (cale. get (Calendar. YEAR ));
}

Public static String getCurrentMonth (){
Calendar cale = Calendar. getInstance ();
Int month = cale. get (Calendar. MONTH );
Month ++;
String sMonth = Integer. toString (month );
If (month <10)
SMonth = "0" + month;
Return sMonth;
}

/**
* Get days
*
* @ Param sdate
* @ Return String
*/
Public static String getDay (String sdate ){
String [] date = sdate. split ("-");
Return date [2];
}

Public static String getFullDate (String date ){
If (date! = Null & date. length () = 1)
Return "0" + date;
Return date;
}

Public static String getSimpleDateString (String sdate ){
Return sdate. replace ("-","");
}

// Convert a date from a character to a date type
Public static Date convertStringToDate (String pattern, String strDate)
Throws ParseException {
Date aDate = null;
ADate = parse (strDate, pattern );
Return aDate;
}

// Obtain the string of the current date according to the specified format
Public static String getTodayDate (String aMask ){
Date date = new Date ();
Return getDateTime (aMask, date );
}

// Obtain the string of the specified date based on the specified format
Public static String getDateTime (String aMask, Date aDate ){
SimpleDateFormat df = null;
String returnValue = "";
Df = new SimpleDateFormat (aMask );
ReturnValue = df. format (aDate );
Return (returnValue );
}

Public static int getYear (){
Calendar c = Calendar. getInstance ();
Int yy = c. get (Calendar. YEAR );
Return yy;
}

Public static int getMonth (){
Calendar c = Calendar. getInstance ();
Int month = c. get (Calendar. MONTH );
Return month + 1;
}

Public static int getDate (){
Calendar c = Calendar. getInstance ();
Int date = c. get (Calendar. DATE );
Return date;
}

Public static int getHour (){
Calendar c = Calendar. getInstance ();
Int hour = c. get (Calendar. HOUR_OF_DAY );
Return hour;
}

Public static int getSecond (){
Calendar c = Calendar. getInstance ();
Int second = c. get (Calendar. SECOND );
Return second;
}

Public static int getMinute (){
Calendar c = Calendar. getInstance ();
Int minute = c. get (Calendar. MINUTE );
Return minute;
}

Public static String getCurDateTime (){
Return getCurDate () + "" + getCurTime ();
}

Public static String getCurDate (){
String fullDate = getCurYearMonth ();
Int temp = getDate ();
If (temp <10 ){
FullDate + = "-0" + temp;
} Else {
FullDate + = "-" + temp;
}
Return fullDate;
}

Public static String getCurYearMonth (){
String fullDate = String. valueOf (getYear ());
Int temp = getMonth ();
If (temp <10 ){
FullDate + = "-0" + temp;
} Else {
FullDate + = "-" + temp;
}
Return fullDate;
}

Public static String getCurTime (){
String time = getCurHourMinute ();
Int temp = getSecond ();
If (temp <10 ){
Time + = ": 0" + temp;
} Else {
Time + = ":" + temp;
}
Return time;
}

Public static String getCurHourMinute (){
String time;
Int temp = getHour ();
If (temp <10 ){
Time = "0" + temp + ":";
} Else {
Time = temp + ":";
}
Temp = getMinute ();
If (temp <10 ){
Time + = "0" + temp;
} Else {
Time + = temp;
}
Return time;
}
/**
*
* @ Description: obtains the current time.
* @ Param @ return
* @ Return StringBuffer
* @ Throws
* @ Author ningpeng
* @ Date January 1, January 8, 2016
*/
Public static StringBuffer getNow ()
{
Date date = new Date ();
Calendar c = new GregorianCalendar ();
C. setTime (date );
Int year = c. get (Calendar. YEAR );
Int month = c. get (Calendar. MONTH) + 1;
Int day = c. get (Calendar. DATE );
Int hour = c. get (Calendar. HOUR_OF_DAY );
Int minute = c. get (Calendar. MINUTE );
Int seconds = c. get (Calendar. SECOND );
StringBuffer buff = new StringBuffer ();
Buff. append (year). append (month). append (day). append (hour). append (minute). append (seconds). toString ();
Return buff;
}

Public static String DateFormat (Date date ){
Calendar c = Calendar. getInstance ();
C. setTime (date );
C. get (java. util. Calendar. HOUR_OF_DAY );
String pattern = "yyyy-MM-dd ";
If (c. get (java. util. Calendar. HOUR_OF_DAY )! = 0 ){
Pattern = "yyyy-MM-dd hh ";
} Else if (c. get (java. util. Calendar. MINUTE )! = 0 ){
Pattern = "yyyy-MM-dd hh: mm ";
} Else if (c. get (java. util. Calendar. SECOND )! = 0 ){
Pattern = "yyyy-MM-dd hh: mm: ss ";
}
Return new SimpleDateFormat (pattern). format (date );
}

Public static void main (String [] args ){
System. out. println (getMonth ());
}
}