import java.sql.Timestamp;
import java.text.SimpleDateFormat;
import java.time.Instant;
import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
 
public class Main {
	public static void main(String[] args) {
		System.out.println("Instant:   " + Instant.EPOCH);
		System.out.println("Timestamp: " + epochMilliFormatted());
	}
 
	public static String epochMilliFormatted() {
		Date date = new Date(Timestamp.from(Instant.EPOCH).getTime());
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ssXXX", Locale.ENGLISH);
		sdf.setTimeZone(TimeZone.getTimeZone("Etc/UTC"));
		return sdf.format(date);
	}
}

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