String转Date, Timestamp

1. String to Date(java.util.Date同时包含日期和时间，而java.sql.Date仅包含日期)

2. Date to Timestamp
   借助SimpleDateFormat

   String str = "2017-09-15 10:50:00";SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");try {       Date date = sf.parse(str);       System.out.println(date);       Timestamp t1 = new Timestamp(date.getTime());       System.out.println(t1);} catch (Exception e) {       e.printStackTrace();}

   输出

   Fri Sep 15 10:50:00 CST 20172017-09-15 10:50:00.0

3. Date to String

   Date date = new Date();   DateFormat format = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");String str = format.format(date); 

4. String to Timestamp
   (1)

   String str = "2015-02-25 11:11:11";  Timestamp t = Timestamp.valueOf(str); 

   (2)String -> Date -> Timestamp

   SimpleDateFormat sf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");  try {      Date date = sf.parse(str);      System.out.println(date);      Timestamp t1 = new Timestamp(date.getTime());      System.out.println(t1);  } catch (ParseException e) {      e.printStackTrace();  }  

   注意SimpleDateFormat的format和parse方法