Found a very full Java processing time Date type of class

Also collects a good Java time format encyclopedia, this is made of the class

Java.util. *;
Import Java.text. * ;
Import Java.util.Calendar;

public class Vedate {
/**
* Get now time
*
* @return return Time type YYYY-MM-DD HH:MM:SS
*/
public static Date Getnowdate () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String datestring = Formatter.format (currenttime);
Parseposition pos = new parseposition (8);
Date currenttime_2 = Formatter.parse (datestring, POS);
return currenttime_2;
}

/**
* Get now time
*
* @return return short time format YYYY-MM-DD
*/
public static Date Getnowdateshort () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd");
String datestring = Formatter.format (currenttime);
Parseposition pos = new parseposition (8);
Date currenttime_2 = Formatter.parse (datestring, POS);
return currenttime_2;
}

/**
* Get now time
*
* @return return string format yyyy-mm-dd HH:mm:ss
*/
public static String Getstringdate () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String datestring = Formatter.format (currenttime);
return datestring;
}

/**
* Get now time
*
* @return Returns a short time string format YYYY-MM-DD
*/
public static String Getstringdateshort () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd");
String datestring = Formatter.format (currenttime);
return datestring;
}

/**
* Get time Hour: minute; SEC HH:mm:ss
*
* @return
*/
public static String Gettimeshort () {
SimpleDateFormat formatter = new SimpleDateFormat ("HH:mm:ss");
Date currenttime = new Date ();
String datestring = Formatter.format (currenttime);
return datestring;
}

/**
* Converts a long time format string to a time yyyy-mm-dd HH:mm:ss
*
* @param strdate
* @return
*/
public static Date Strtodatelong (String strdate) {
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
Parseposition pos = new parseposition (0);
Date strtodate = Formatter.parse (strdate, POS);
return strtodate;
}

/**
* Converts a long time format time to a string yyyy-mm-dd HH:mm:ss
*
* @param datedate
* @return
*/
public static String Datetostrlong (Java.util.Date datedate) {
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String datestring = Formatter.format (datedate);
return datestring;
}

/**
* Convert short time format time to string YYYY-MM-DD
*
* @param datedate
* @param k
* @return
*/
public static String Datetostr (Java.util.Date datedate) {
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd");
String datestring = Formatter.format (datedate);
return datestring;
}

/**
* Converts a short time format string to a time yyyy-mm-dd
*
* @param strdate
* @return
*/
public static Date strtodate (String strdate) {
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd");
Parseposition pos = new parseposition (0);
Date strtodate = Formatter.parse (strdate, POS);
return strtodate;
}

/**
* Get the time now
*
* @return
*/
public static Date Getnow () {
Date currenttime = new Date ();
return currenttime;
}

/**
* Extract the last day of one months
*
* @param Day
* @return
*/
public static Date Getlastdate (Long day) {
Date date = new Date ();
Long date_3_hm = Date.gettime ()-3600000 * * day;
Date date_3_hm_date = new Date (DATE_3_HM);
return date_3_hm_date;
}

/**
* Get the time now
*
* @return String YyyyMMdd HHMMSS
*/
public static String Getstringtoday () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("YyyyMMdd hhmmss");
String datestring = Formatter.format (currenttime);
return datestring;
}

/**
* Get the hour Now
*/
public static String Gethour () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String datestring = Formatter.format (currenttime);
String hour;
hour = datestring.substring (11, 13);
Return hour;
}

/**
* Get the minute now
*
* @return
*/
public static String GetTime () {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");
String datestring = Formatter.format (currenttime);
String min;
min = datestring.substring (14, 16);
return min;
}

/**
* According to the time the user passed in the format, return the current time format if it is YYYYMMDD, note that the letter Y can not capitalize.
*
* @param Sformat
* YYYYMMDDHHMMSS
* @return
*/
public static string Getuserdate (String sformat) {
Date currenttime = new Date ();
SimpleDateFormat formatter = new SimpleDateFormat (Sformat);
String datestring = Formatter.format (currenttime);
return datestring;
}

/**
* Two hours between the difference, you must ensure that two times are "hh:mm" format, return character of the minute
*/
public static string Gettwohour (String st1, String st2) {
string[] KK = null;
string[] JJ = null;
KK = St1.split (":");
JJ = St2.split (":");
if (Integer.parseint (kk[0]) < Integer.parseint (jj[0]))
return "0";
else {
Double y = double.parsedouble (kk[0]) + double.parsedouble (kk[1])/60;
Double u = double.parsedouble (jj[0]) + double.parsedouble (jj[1])/60;
if ((y-u) > 0)
return y-u + "";
Else
Return "0