Java - 서버의 현재 시점 파악

/**
 *  
 *  ： 
 */
import java.util.*;

public class GetNowDate {
	Calendar calendar = null;

	public GetNowDate() {
		calendar = Calendar.getInstance();
		calendar.setTime(new Date());
	}

	public int getYear() {
		return calendar.get(Calendar.YEAR);
	}

	public int getMonth() {
		return 1 + calendar.get(Calendar.MONTH);
	}

	public int getDay() {
		return calendar.get(Calendar.DAY_OF_MONTH);
	}

	public int getHour() {
		return calendar.get(Calendar.HOUR_OF_DAY);
	}

	public int getMinute() {
		return calendar.get(Calendar.MINUTE);
	}

	public int getSecond() {
		return calendar.get(Calendar.SECOND);
	}

	public String getDate() {
		return getMonth() + "/" + getDay() + "/" + getYear();
	}

	public String getTime() {
		return getHour() + ":" + getMinute() + ":" + getSecond();
	}

	public String getDate2() {
		String yyyy = "0000", mm = "00", dd = "00";
		yyyy = yyyy + getYear();
		mm = mm + getMonth();
		dd = dd + getDay();
		yyyy = yyyy.substring(yyyy.length() - 4);
		mm = mm.substring(mm.length() - 2);
		dd = dd.substring(dd.length() - 2);
		return yyyy + "/" + mm + "/" + dd;
	}

	public String getTime2() {
		String hh = "00", mm = "00", ss = "00";
		hh = hh + getHour();
		mm = mm + getMinute();
		ss = ss + getSecond();
		hh = hh.substring(hh.length() - 2, hh.length());
		mm = mm.substring(mm.length() - 2, mm.length());
		ss = ss.substring(ss.length() - 2, ss.length());
		return hh + ":" + mm + ":" + ss;
	}
}