Various methods and formats for obtaining the current time of the system in Java_DracoTianlong’s Blog

/**
 * Returns the current datetime string

 * Default format: yyyy-mm-dd hh:mm:ss
 *
 * @return String returns the current string type date time
 */
 public static String getCurrentTime() {
 String returnStr = null;
 SimpleDateFormat f = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
 Date date = new Date();
 returnStr = f. format(date);
 return returnStr;
 }
 	
 /**
 * Returns the current datetime string

 * Default format: yyyymmddhhmmss
 *
 * @return String returns the current string type date time
 */
 public static BigDecimal getCurrentTimeAsNumber() {
 String returnStr = null;
 SimpleDateFormat f = new SimpleDateFormat("yyyyMMddHHmmss");
 Date date = new Date();
 returnStr = f. format(date);
 return new BigDecimal(returnStr);
 }


 /**
 * Returns the current datetime string in a custom format
 *
 * @param format
 * format rules
 * @return String returns the current string type date time
 */
 public static String getCurrentTime(String format) {
 String returnStr = null;
 SimpleDateFormat f = new SimpleDateFormat(format);
 Date date = new Date();
 returnStr = f. format(date);
 return returnStr;
 }

 /**
 * Return the current string date
 *
 * @return String Returned string date
 */
 public static String getCurDate() {
 Calendar calendar = Calendar. getInstance();
 SimpleDateFormat simpledateformat = new SimpleDateFormat("yyyy-MM-dd");
 String strDate = simpledateformat. format(calendar. getTime());
 return strDate;
 }

 /**
 * Returns a character date in the specified format
 * @param date
 * @param formatString
 * @return
 */
 public static String Date2String(Date date, String formatString) {
 if (G4Utils. isEmpty(date)) {
 return null;
 }
 SimpleDateFormat simpledateformat = new SimpleDateFormat(formatString);
 String strDate = simpledateformat. format(date);
 return strDate;
 }
 	
 /**
 * Return the current string date
 *
 * @param format
 * format rules
 *
 * @return String Returned string date
 */
 public static String getCurDate(String format) {
 Calendar calendar = Calendar. getInstance();
 SimpleDateFormat simpledateformat = new SimpleDateFormat(format);
 String strDate = simpledateformat. format(calendar. getTime());
 return strDate;
 }

 /**
 * Return the TimeStamp object
 *
 * @return
 */
 public static Timestamp getCurrentTimestamp() {
 Object obj = TypeCaseHelper. convert(getCurrentTime(), "Timestamp", "yyyy-MM-dd HH:mm:ss");
 if (obj != null)
 return (Timestamp) obj;
 else
 return null;
 }

 /**
 * Convert a string date to a date
 *
 * @param strDate
 * string date
 * @param srcDateFormat
 * source date format
 * @param dstDateFormat
 * target date format
 * @return Date Returned util.Date type date
 */
 public static Date stringToDate(String strDate, String srcDateFormat, String dstDateFormat) {
 Date rtDate = null;
 Date tmpDate = (new SimpleDateFormat(srcDateFormat)).parse(strDate, new ParsePosition(0));
 String tmpString = null;
 if (tmpDate != null)
 tmpString = (new SimpleDateFormat(dstDateFormat)).format(tmpDate);
 if (tmpString != null)
 rtDate = (new SimpleDateFormat(dstDateFormat)). parse(tmpString, new ParsePosition(0));
 return rtDate;
 }