import java.text.SimpleDateFormat; 
import java.util.Date; 
import java.util.TimeZone; 

public class TimeZoneTest { 
    public static void main(String[] args) { 
        try { 
            ZonedDateTime dt = ZonedDateTime.parse("2015-10-25T01:00:00+02:00[Europe/Berlin]"); 
			dt = dt.plusMinutes(120); 
			ZonedDateTime dt2 = ZonedDateTime.parse(dt.format(DateTimeFormatter.ISO_DATE_TIME), 
			DateTimeFormatter.ISO_DATE_TIME); 
			System.out.println("1: " + dt.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt.toEpochSecond()); 
			System.out.println("2: " + dt2.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt2.toEpochSecond()); 
			System.out.println(); 
			dt = dt.plusMinutes(30); 
			dt2 = ZonedDateTime.parse(dt.format(DateTimeFormatter.ISO_DATE_TIME), DateTimeFormatter.ISO_DATE_TIME); 
			System.out.println("1: " + dt.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt.toEpochSecond()); 
			System.out.println("2: " + dt2.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt2.toEpochSecond()); 
			System.out.println(); 
			dt = dt.plusMinutes(30); 
			dt2 = ZonedDateTime.parse(dt.format(DateTimeFormatter.ISO_DATE_TIME), DateTimeFormatter.ISO_DATE_TIME); 
			System.out.println("1: " + dt.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt.toEpochSecond()); 
			System.out.println("2: " + dt2.format(DateTimeFormatter.ISO_DATE_TIME) + " " + dt2.toEpochSecond()); 
			System.out.println(); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
}