java Timestamp、Date和String之間的互轉

1.String 轉 Date

String dateStr = "2012-12-31 00:00:00";

Date date = new Date();

DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  

date = sdf.parse(dateStr);

 

2.Date 轉 String

Date date = new Date();

DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");  

String dateStr = sdf.format(date);

 

3.String 轉Timestamp

String tsStr = "2012-12-31 00:00:00";

Timestamp ts = new Timestamp(System.currentTimeMillis());

 ts = Timestamp.valueOf(tsStr);

 

4.Timestamp 轉 String

DateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Timestamp ts = new Timestamp(System.currentTimeMillis());         

String tsStr = ""; 

tsStr = sdf.format(ts); 

 

5.Timestamp 轉 Date

Timestamp ts = new Timestamp(System.currentTimeMillis()); 

Date date = new Date();

date = ts;

 

 

6.Date 轉 Timestamp

Date date = new Date();
String time = "";
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
time = sdf.format(date);
Timestamp ts = Timestamp.valueOf(time);