package personal.jessica;
import java.util.Date;
import java.util.Calendar;
import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Locale;
class Datetest{
 /**
  *method 將字符串類型的日期轉(zhuǎn)換為一個(gè)timestamp（時(shí)間戳記java.sql.Timestamp）
*@paramdateString 需要轉(zhuǎn)換為timestamp的字符串
 *@returndataTime timestamp
  */
 public final static java.sql.Timestamp string2Time(String dateString) 
  throws java.text.ParseException {
   DateFormat dateFormat;
  dateFormat = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss.SSS", Locale.ENGLISH);//設(shè)定格式
  //dateFormat = new SimpleDateFormat("yyyy-MM-dd kk:mm:ss", Locale.ENGLISH);
  dateFormat.setLenient(false);
  java.util.Date timeDate = dateFormat.parse(dateString);//util類型
  java.sql.Timestamp dateTime = new java.sql.Timestamp(timeDate.getTime());//Timestamp類型,timeDate.getTime()返回一個(gè)long型
  return dateTime;
 }
 /**
  *method 將字符串類型的日期轉(zhuǎn)換為一個(gè)Date（java.sql.Date）
  *@param dateString 需要轉(zhuǎn)換為Date的字符串
  *@return dataTime Date
  */
 public final static java.sql.Date string2Date(String dateString)
  throws java.lang.Exception {
  DateFormat dateFormat;
  dateFormat = new SimpleDateFormat("yyyy-MM-dd", Locale.ENGLISH);
  dateFormat.setLenient(false);
  java.util.Date timeDate = dateFormat.parse(dateString);//util類型
  java.sql.Date dateTime = new java.sql.Date(timeDate.getTime());//sql類型
  return dateTime;
 }
 
 public static void main(String[] args){
  Date da = new Date();
  //注意：這個(gè)地方da.getTime()得到的是一個(gè)long型的值
  System.out.println(da.getTime());
  
  //由日期date轉(zhuǎn)換為timestamp
  
  //第一種方法：使用new Timestamp(long)
  Timestamp t = new Timestamp(new Date().getTime());
  System.out.println(t);
  //第二種方法：使用Timestamp(int year,int month,int date,int hour,int minute,int second,int nano)
  Timestamp tt = new Timestamp(Calendar.getInstance().get(
      Calendar.YEAR) - 1900, Calendar.getInstance().get(
      Calendar.MONTH), Calendar.getInstance().get(
      Calendar.DATE), Calendar.getInstance().get(
      Calendar.HOUR), Calendar.getInstance().get(
      Calendar.MINUTE), Calendar.getInstance().get(
      Calendar.SECOND), 0);
  System.out.println(tt);
  try {
   String sToDate = "2005-8-18";//用于轉(zhuǎn)換成java.sql.Date的字符串
      String sToTimestamp = "2005-8-18 14:21:12.123";//用于轉(zhuǎn)換成java.sql.Timestamp的字符串
      Date date1 = string2Date(sToDate);
      Timestamp date2 = string2Time(sToTimestamp);
   System.out.println("Date:"+date1.toString());//結(jié)果顯示
   System.out.println("Timestamp:"+date2.toString());//結(jié)果顯示
  }catch(Exception e) {
   e.printStackTrace();
  }
 }
}