Java UTC time

Calendar lastDate = Calendar. getInstance (); </p> <p> DateFormat gmtFormat = new SimpleDateFormat (); <br/> TimeZone gmtTime = TimeZone. getTimeZone ("UTC"); </p> <p> gmtFormat. setTimeZone (gmtTime); <br/> Calendar calendar = java. util. calendar. getInstance (); </p> <p> System. out. println ("GMT Time:" + calendar. getTime (); </p> <p> System. out. println ("UTC Time:" + gmtFormat. format (calendar. getTime (); </p> <p>

 

Simpledateformat Foo = new simpledateformat ("yyyy-mm-dd hh: mm: SS"); <br/> system. out. println ("foo:" + Foo. format (new date (); </P> <p> calendar GC = gregoriancalendar. getinstance (); <br/> system. out. println ("GC. gettime (): "+ GC. gettime (); <br/> system. out. println ("GC. gettimeinmillis (): "+ new date (GC. gettimeinmillis (); </P> <p> // time of the Current System Default Time Zone: <br/> calendar = new gregoriancalendar (); <br/> system. out. P RINT ("Time Zone:" + calendar. gettimezone (). GETID () + ""); <br/> system. out. println ("time:" + calendar. get (calendar. hour_of_day) + ":" + calendar. get (calendar. minute); <br/> // us time zone in Los Angeles <br/> timezone TZ = timezone. gettimezone ("America/los_angeles"); <br/> // time zone conversion <br/> calendar. settimezone (Tz); <br/> system. out. print ("Time Zone:" + calendar. gettimezone (). GETID () + ""); <br/> system. out. println ("time:" + calendar. get (calendar. hour_of_day) +": "+ Calendar. get (calendar. minute); <br/> date time = new date (); </P> <p> // 1. Obtain the local time: <br/> JAVA. util. calendar Cal = Java. util. calendar. getinstance (); </P> <p> // 2. Get Time Offset: <br/> int zoneoffset = Cal. get (Java. util. calendar. zone_offset); </P> <p> // 3. Time Difference in summer: <br/> int dstoffset = Cal. get (Java. util. calendar. dst_offset); </P> <p> // 4. deduct these differences from the local time to obtain the UTC time: <br/> Cal. add (Java. util. calendar. millisecond,-(zoneoffse T + dstoffset); </P> <p> // The time obtained by calling Cal. Get (int x) or Cal. gettimeinmillis () is the UTC Standard Time. <Br/> system. out. println ("UTC:" + new date (Cal. gettimeinmillis (); </P> <p> calendar calendar1 = calendar. getinstance (); <br/> timezone tztz = timezone. gettimezone ("GMT"); <br/> calendar1.settimezone (tztz); <br/> system. out. println (calendar. gettime (); <br/> system. out. println (calendar. gettimeinmillis ());