Javalearning: Date Action class

Package Org.fun.classdemo;import Java.util.calendar;import Java.util.gregoriancalendar;public class DateTime { Private Calendar calendar = new GregorianCalendar (); Instantiate the Calendar object public String getDate () {//2014-07-30stringbuffer buf = new StringBuffer (); Buf.append (Calendar.get ( calendar.year). Append ("-"); Buf.append (This.addzero ((Calendar.get (calendar.month) + 1), 2)). Append ("-"); Buf.append (This.addzero (Calendar.get (Calendar.day_of_month), 2)); return buf.tostring ();} Public String GetDateTime () {//2014-07-30 10:19:34.123stringbuffer buf = new StringBuffer (); Buf.append (This.getdate ()) . Append (""); Buf.append (This.addzero (Calendar.get (Calendar.hour_of_day), 2)). Append (":"); Buf.append (This.addzero (Calendar.get (Calendar.minute), 2)). Append (":"); Buf.append (This.addzero (Calendar.get (Calendar.second), 2)). Append ("."); Buf.append (This.addzero (Calendar.get (Calendar.millisecond), 3)); return buf.tostring ();} Public String Getdatecomplete () {//July 30, 2014 StringBuffer buf = new StringBuffer (); Buf.appEnd (Calendar.get (Calendar.year)). Append ("Year"), Buf.append (This.addzero (Calendar.get (calendar.month) + 1), 2)). Append ("month"); Buf.append (This.addzero (Calendar.get (Calendar.day_of_month), 2)). Append ("Day"); return buf.tostring ();} Public String Getdatetimecomplete () {//July 30, 2014 10:19 34 sec 123 msec StringBuffer buf = new StringBuffer (); Buf.append ( This.getdatecomplete ()); Buf.append (This.addzero (Calendar.get (Calendar.hour_of_day), 2)). Append ("time"); Buf.append ( This.addzero (Calendar.get (Calendar.minute), 2)). Append ("min"); Buf.append (This.addzero (Calendar.get ( Calendar.second), 2). Append ("Seconds"), Buf.append (This.addzero (Calendar.get (Calendar.millisecond), 3)). Append ("milliseconds"); return buf.tostring ();} Private String addzero (int temp, int len) {stringbuffer str = new StringBuffer (); str.append (temp);//increment number while (str.length () < Len) {str.insert (0, 0);//In the first position, add the letter 0}return str.tostring ();} public static void Main (String args[]) {System.out.println (New DateTime (). GetDate ()); System.out.println (New DateTime (). GetDateTime ()); System.out.println (New DateTime (). Getdatecomplete ()); System.out.println (New DateTime (). Getdatetimecomplete ());}}

Javalearning: Date Action class