problems with Java daylight savings time

Question

I have a Java app that needs to be cognizant of the time zone. When I take a Unix epoch time and try to convert it into a timestamp to use for an Oracle SQL call, it is get

Answer 1

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

public class TimeZoneTest {
    public static void main(String[] argv) throws ParseException {

        SimpleDateFormat formatter = new SimpleDateFormat("dd-M-yyyy hh:mm:ss a");

        String dateInString = "22-01-2015 10:15:55 AM";
        Date date = formatter.parse(dateInString);
        TimeZone tz = TimeZone.getDefault();

        // From TimeZone Asia/Singapore
        System.out.println("TimeZone : " + tz.getID() + " - " + tz.getDisplayName());
        System.out.println("TimeZone : " + tz);
        System.out.println("Date : " + formatter.format(date));

        // To TimeZone America/New_York
        SimpleDateFormat sdfAmerica = new SimpleDateFormat("dd-M-yyyy hh:mm:ss a");
        TimeZone tzInAmerica = TimeZone.getTimeZone("America/New_York");
        sdfAmerica.setTimeZone(tzInAmerica);

        String sDateInAmerica = sdfAmerica.format(date); // Convert to String first
        Date dateInAmerica = formatter.parse(sDateInAmerica);

        System.out.println("\nTimeZone : " + tzInAmerica.getID() + 
                                      " - " + tzInAmerica.getDisplayName());
        System.out.println("TimeZone : " + tzInAmerica);
        System.out.println("Date (String) : " + sDateInAmerica);
        System.out.println("Date (Object) : " + formatter.format(dateInAmerica)); 
    }

}