Date Time Api in Java 8: Java 8 introduce with new Date Time API. which is much simpler than the old date time api and reduce the overheads faces in the old api  some of the changes are describe below in new date time api.

1. LocalDate/LocalTime: LocalDate and LocalTime Classes is introduce where timezones are not required.

 // current date and time
 LocalDateTime currentTime = LocalDateTime.now();
 System.out.println("Current DateTime: " + currentTime);
                
 LocalDate date1 = currentTime.toLocalDate();
 System.out.println("date1: " + date1);
                
 Month month = currentTime.getMonth();
 int day = currentTime.getDayOfMonth();
 int seconds = currentTime.getSecond();
                
 System.out.println("Month: " + month +"day: " + day +"seconds: " + seconds);

                
   2. Zone DateTime API: It is used when time zone is to be considered.
            

 // current date and time

 ZonedDateTime date = ZonedDateTime.parse("2016-01-05T10:14:20+06:30[Asia/Kolkata]");
 System.out.println("date: " + date);

   3.ChronoUnit Enum: ChronoUnit enum is added in the new Java 8 API which is Used to represent day, month, etc and it is available in java.time.temporal package.

//Get the current date
LocalDate currentDate = LocalDate.now();
System.out.println("Current date: " + currentDate);
            
//add 1 week to the current date
LocalDate nextWeek = currentDate.plus(1, ChronoUnit.WEEKS);
System.out.println("Next week: " + nextWeek);
          
//add 2 month to the current date
LocalDate nextMonth = currentDate.plus(2, ChronoUnit.MONTHS);
System.out.println("Next month: " + nextMonth);
            
//add 3 year to the current date
LocalDate nextYear = currentDate.plus(3, ChronoUnit.YEARS);
System.out.println("Next year: " + nextYear);
            
//add 10 years to the current date
LocalDate nextDecade = currentDate.plus(1, ChronoUnit.DECADES);
System.out.println("Next ten year: " + nextDecade);