Java8 new Date and time demo

 //LocalDateTime    Private Static voidtest1 () {//Initialize date and timeLocalDateTime Ldt1=localdatetime.of (2016,10,04,10,40,50); System.out.println (LDT1);//2016-10-04t10:40:50//get the current date and timeLocalDateTime ldt2=Localdatetime.now (); System.out.println (LDT2);//2017-11-04t11:02:57.721//Increased yearLocalDateTime Ldt3=ldt2.plusyears (2);//2019-11-04t11:02:57.721System.out.println (LDT3); //reduced minutesLocalDateTime Ldt4=ldt2.minusminutes (30);//2017-11-04t10:32:57.721System.out.println (LDT4); //get month day time secondsSystem.out.println ("Year:" +ldt2.getyear ());//Year:System.out.println ("Month:" +ldt2.getmonthvalue ());//Month: oneSystem.out.println ("Day:" +ldt2.getdayofmonth ());//Day: 4System.out.println ("Time:" +ldt2.gethour ());//Time: OneSystem.out.println ("Points:" +ldt2.getminute ());//points: 2System.out.println ("Seconds:" +ldt2.getsecond ());//seconds:}

LocalDateTime Use

//Instant: Timestamp (in Unix: January 1, 1970 0:0 0 seconds to a millisecond value of a specified time    Private Static voidtest2 () {Instant ins1=instant.now ();//get UTC time Zone by defaultSystem.out.println (INS1);//2017-11-04t03:23:45.442z//get East Zone eight time (Beijing time)Offsetdatetime odt= Ins1.atoffset (zoneoffset.ofhours (8));//2017-11-04t11:23:45.442+08:00System.out.println (ODT); //Get millisecond valueSystem.out.println (Ins1.toepochmilli ());//1509765825442//gets the seconds valueSystem.out.println (Odt.toepochsecond ());//1509765825Instant ins2=instant.ofepochmilli (60);//1970-01-01t00:00:00.060zSystem.out.println (INS2); }

Instant: Timestamp (in Unix: January 1, 1970 0:0 0 seconds to a millisecond value of a specified time

//Calculate time interval    Private Static voidtest3 () {//The first wayInstant ins1=Instant.now (); Try{Thread.Sleep (1000); } Catch(interruptedexception e) {e.printstacktrace (); } Instant ins2=Instant.now (); Duration Duration=Duration.between (INS1,INS2); System.out.println ("Millisecond of the interval:" +duration.tomillis ());//Millisecond of interval: 1031System.out.println ("Day of the interval:" +duration.todays ());//days at intervals: 0System.out.println ("Interval of Hours:" +duration.tohours ());//hours of interval: 0System.out.println ("Minute of the interval:" +duration.tominutes ());//interval of minutes: 0System.out.println ("Nanosecond of the interval:" +duration.tonanos ());//nanosecond of interval: 1031000000//The second wayLocalTime lt1=Localtime.now (); Try{Thread.Sleep (2000); } Catch(interruptedexception e) {e.printstacktrace (); } localtime LT2=Localtime.now (); System.out.print (Duration.between (LT1,LT2). Tomillis ());//2000 Ms}

Calculate time interval

   Private Static voidtest4 () {localdate ld1=localdate.of (2015,1,1); Localdate ld2=Localdate.now (); System.out.println (LD2);//2017-11-04Period Period=Period.between (LD1,LD2); SYSTEM.OUT.PRINTLN (period);//P2y10m3dSystem.out.println (Period.getyears ());//2System.out.println (Period.getmonths ());//TenSystem.out.println (Period.getdays ());//3}

Calculate date interval

Java8 new Date and time demo