/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
 
import java.time.* ;
import java.time.format.* ;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Instant epoch = Instant.EPOCH ;
 
		ZoneId z = ZoneId.of( "Europe/London" ) ;
        ZonedDateTime zdt = epoch.atZone( z ) ;
 
        System.out.println( "epoch.toString(): " + epoch ) ;
        System.out.println( "zdt.toString(): " + zdt ) ;
 
        ZonedDateTime zdt2019 = 
        	Instant
        	.parse( "2019-01-01T00:00:00Z" )
        	.atZone( ZoneId.of( "Europe/London" ) )
    	;
 
    	System.out.println( "zdt2019.toString(): " + zdt2019 ) ;
 
    	// Extract `Instant` from our `ZonedDateTime`, effectively adjusting from zone to UTC.
    	Instant instant = zdt.toInstant() ;
 
    	System.out.println( "instant.toString(): " + instant ) ;
 
    	java.util.Date d = Date.from( instant ) ; // Same moment, but with possible data-loss as nanoseconds are truncated to milliseconds.
 
    	System.out.println( "d.toString(): " + d ) ;
 
	}
}

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