//將時間字串轉Timestamp型別
public static Timestamp string2Time(String dateString) throws ParseException { 
	DateFormat dateFormat; 
	dateFormat = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss", Locale.ENGLISH); 
	dateFormat.setLenient(false); 
	java.util.Date timeDate = dateFormat.parse(dateString);//util型別 
	Timestamp dateTime =
 
 new Timestamp(timeDate.getTime());//Timestamp型別,timeDate.getTime()返回一個long型 
	return dateTime; 
}

Timestamp t = string2Time("2018-07-27 12:25:00");

//組織sql語句
String sql = "insert into table values('"+t+"');";