001 package market; 002 003 import java.text.SimpleDateFormat; 004 import java.util.Calendar; 005 import java.util.GregorianCalendar; 006 007 /** 008 * The time format used by the market. This is merely a GregorianCalendar with an overwritten 009 * toString() method. 010 */ 011 public class MarketCalendar extends GregorianCalendar { 012 013 /** 014 * ID for serialization. 015 */ 016 private static final long serialVersionUID = -5556068520240140632L; 017 018 public MarketCalendar() { 019 super(); 020 } 021 022 /** 023 * @param year the new Calendar's year. 024 * @param month the new Calendar's month. 025 * @param date the new Calendar's date. 026 */ 027 public MarketCalendar(int year, int month, int date) { 028 super(year, month, date); 029 } 030 031 /** 032 * Takes an arbitrary Calenar and creates a MarketCalendar from it. 033 * @param gc the original Calendar. 034 * @return a MarketCalendar representing the same date as the passed Calendar. 035 */ 036 public static MarketCalendar create(Calendar gc) { 037 return new MarketCalendar(gc.get(YEAR), gc.get(MONTH), gc.get(DATE)); 038 } 039 040 /** 041 * @return the Calendar as dd.MM.yyyy (e.g. 01.01.2000). 042 */ 043 public String toString() { 044 SimpleDateFormat sdf = new SimpleDateFormat("dd.MM.yyyy"); 045 return sdf.format(getTime()); 046 } 047 }