New Date-Time API in Java 8

// Java code for LocalDate
// / LocalTime Function
import java.time.*;
import java.time.format.DateTimeFormatter;
 
public class Date {

public static void LocalDateTimeApi()
{
 
    // the current date
    LocalDate date = LocalDate.now();
    System.out.println("the current date is "+
                        date);
 
 
    // the current time
    LocalTime time = LocalTime.now();
    System.out.println("the current time is "+
                        time);
     
 
    // will give us the current time and date
    LocalDateTime current = LocalDateTime.now();
    System.out.println("current date and time : "+
                        current);
 
 
    // to print in a particular format
    DateTimeFormatter format = 
      DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");  
  
    String formatedDateTime = current.format(format);  
   
    System.out.println("in formatted manner "+
                        formatedDateTime);
 
 
    // printing months days and seconds
    Month month = current.getMonth();
    int day = current.getDayOfMonth();
    int seconds = current.getSecond();
    System.out.println("Month : "+month+" day : "+
                        day+" seconds : "+seconds);
 
    // printing some specified date
    LocalDate date2 = LocalDate.of(1950,1,26);
    System.out.println("the republic day :"+date2);
 
    // printing date with current time.
    LocalDateTime specificDate = 
        current.withDayOfMonth(24).withYear(2016);

    System.out.println("specific date with "+
                       "current time : "+specificDate);
}

    // Driver code
    public static void main(String[] args) 
    {
        LocalDateTimeApi();
    }
}

// Java code for Zoned date-time API
import java.time.LocalDateTime;
import java.time.ZoneId;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;

public class Zone {

// Function to get Zoned Date and Time
public static void ZonedTimeAndDate()
{
    LocalDateTime date = LocalDateTime.now();
    DateTimeFormatter format1 = 
      DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss"); 
    
    String formattedCurrentDate = date.format(format1);
    
    System.out.println("formatted current Date and"+
                      " Time : "+formattedCurrentDate); 

    // to get the current zone
    ZonedDateTime currentZone = ZonedDateTime.now(); 
    System.out.println("the current zone is "+
                        currentZone.getZone()); 

    // getting time zone of specific place
    // we use withZoneSameInstant(): it is
    // used to return a copy of this date-time 
    // with a different time-zone,  
    // retaining the instant.
    ZoneId tokyo = ZoneId.of("Asia/Tokyo");

    ZonedDateTime tokyoZone =
            currentZone.withZoneSameInstant(tokyo);
                  
    System.out.println("tokyo time zone is " + 
                        tokyoZone);

    DateTimeFormatter format = 
        DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss"); 
    
    String formatedDateTime = tokyoZone.format(format); 

    System.out.println("formatted tokyo time zone "+
                        formatedDateTime);
    
}
    
    // Driver code
    public static void main(String[] args) 
    {
        
        ZonedTimeAndDate();
        
    }
}

// Java code for period and duration
import java.time.LocalDate;
import java.time.LocalTime;
import java.time.Month;
import java.time.Duration;
import java.time.Period;

public class Geekforgeeks {

    public static void checkingPeriod()
    {
        LocalDate date1 = LocalDate.now();

        LocalDate date2 = 
            LocalDate.of(2014, Month.DECEMBER, 12);

        Period gap = Period.between(date2, date1);
        System.out.println("gap between dates "+
                           "is a period of "+gap);
}

    // Function to check duration
    public static void checkingDuration()
    {  

        LocalTime time1 = LocalTime.now();
        System.out.println("the current time is " +
                            time1);

        Duration fiveHours = Duration.ofHours(5);

        // adding five hours to the current 
        // time and storing it in time2
        LocalTime time2 = time1.plus(fiveHours);

        System.out.println("after adding five hours " +
                           "of duration " + time2);

        Duration gap = Duration.between(time2, time1);
        System.out.println("duration gap between time1" +
                           " & time2 is " + gap);
}

    // Driver code
    public static void main(String[] args) 
    {
        checkingPeriod();
        checkingDuration();
    }
}

// Java code for ChronoUnits Enum
import java.time.LocalDate;
import java.time.temporal.ChronoUnit;

public class Geeksforgeeks {

    // Function to check ChronoUnit 
    public static void checkingChronoEnum()
    {
        LocalDate date = LocalDate.now();
        System.out.println("current date is :" + 
                            date);
    
        // adding 2 years to the current date
        LocalDate year = 
             date.plus(2, ChronoUnit.YEARS);
        
        System.out.println("next to next year is " + 
                            year);
            
        // adding 1 month to the current date
        LocalDate nextMonth = 
                  date.plus(1, ChronoUnit.MONTHS);
        
        System.out.println("the next month is " + 
                            nextMonth);
    
        // adding 1 week to the current date
        LocalDate nextWeek = 
                  date.plus(1, ChronoUnit.WEEKS);
        
        System.out.println("next week is " + nextWeek);
    
        // adding 2 decades to the current date
        LocalDate Decade = 
                  date.plus(2, ChronoUnit.DECADES);
                  
        System.out.println("20 years after today " + 
                            Decade);
    }
    
    // Driver code
    public static void main(String[] args) {
    
        checkingChronoEnum();
        
    }
}

// Java code Temporal Adjuster
import java.time.LocalDate;
import java.time.temporal.TemporalAdjusters;
import java.time.DayOfWeek;

public class Geek 
{

    // Function to check date and time 
    // according to our requirement
    public static void checkingAdjusters()
    {

        LocalDate date = LocalDate.now();
        System.out.println("the current date is "+
                            date);

        // to get the first day of next month
        LocalDate dayOfNextMonth = 
              date.with(TemporalAdjusters.
                        firstDayOfNextMonth());
    
        System.out.println("firstDayOfNextMonth : " +
                            dayOfNextMonth );

        // get the next saturday
        LocalDate nextSaturday = 
                date.with(TemporalAdjusters.
                          next(DayOfWeek.SATURDAY));
        
        System.out.println("next saturday from now is "+
                            nextSaturday);

        // first day of current month
        LocalDate firstDay = 
                  date.with(TemporalAdjusters.
                  firstDayOfMonth());
                                   
        System.out.println("firstDayOfMonth : " +
                            firstDay);

        // last day of current month     
        LocalDate lastDay = 
                  date.with(TemporalAdjusters.
                            lastDayOfMonth());
        
        System.out.println("lastDayOfMonth : " + 
                            lastDay);
}
    
    // Driver code
    public static void main(String[] args) 
    {

        checkingAdjusters();
    }
}