JAVA EE: How to set year, month, hour etc of date and time using with methods of ZonedDateTime Class

Tuesday, 20 February 2018

How to set year, month, hour etc of date and time using with methods of ZonedDateTime Class

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ZoneDateTimeDemo.java

import java.time.ZonedDateTime;

public class ZoneDateTimeDemo

{

    public static void main(String[] args)

    {

        ZonedDateTime zonedDateTime1 = ZonedDateTime.parse("2017-02-03T10:15:30+01:00");

        System.out.println("zonedDateTime1        = "+zonedDateTime1);

        ZonedDateTime zonedDateTime2 = zonedDateTime1.withYear(2018);

        System.out.println("\nYear changed          = "+zonedDateTime2);

        ZonedDateTime zonedDateTime3 = zonedDateTime2.withMonth(10);

        System.out.println("Month changed         = "+zonedDateTime3);

        ZonedDateTime zonedDateTime4 = zonedDateTime3.withDayOfMonth(25);

        System.out.println("Day changed           = "+zonedDateTime4);

        ZonedDateTime zonedDateTime5 = zonedDateTime4.withHour(1);

        System.out.println("Hour changed          = "+zonedDateTime5);

        ZonedDateTime zonedDateTime6 = zonedDateTime5.withMinute(10);

        System.out.println("Min changed           = "+zonedDateTime6);

        ZonedDateTime zonedDateTime7 = zonedDateTime6.withSecond(20);

        System.out.println("Sec changed           = "+zonedDateTime7);

        ZonedDateTime zonedDateTime8 = zonedDateTime7.withNano(50);

        System.out.println("NanoSec changed       = "+zonedDateTime8);

    }

}

Output

zonedDateTime1        = 2017-02-03T10:15:30+01:00

Year changed          = 2018-02-03T10:15:30+01:00

Month changed         = 2018-10-03T10:15:30+01:00

Day changed           = 2018-10-25T10:15:30+01:00

Hour changed          = 2018-10-25T01:15:30+01:00

Min changed           = 2018-10-25T01:10:30+01:00

Sec changed           = 2018-10-25T01:10:20+01:00

NanoSec changed       = 2018-10-25T01:10:20.000000050+01:00