如何从java sql.Timestamp对象获取当天的名字？

Question

如何从周一，周二的java sql.Timestamp对象获取当天的名字？

Answer 1

If ts is your Timestamp object then to get the month in string format:

String month = (new SimpleDateFormat("MMMM")).format(ts.getTime()); // "April"

and for the day of the week:

String day = (new SimpleDateFormat("EEEE")).format(ts.getTime()); // "Tuesday"

Answer 2

You convert your java.sql.Timestamp to a java.sql.Date and send it through a Calendar.

java.sql.Timestamp ts = rs.getTimestamp(1);
java.util.GregorianCalendar cal = Calendar.getInstance();
cal.setTime(ts);
System.out.println(cal.get(java.util.Calendar.DAY_OF_WEEK));

Answer 3

SimpleDateFormat will provide a Locale specific representation using the pattern "EEEE" :

 public static final String getDayName(final java.util.Date date, final java.util.Locale locale)
          {
           SimpleDateFormat df=new SimpleDateFormat("EEEE",locale);
           return df.format(date);
          }

Example usage:

System.out.println(getDayName(new Date(),Locale.US));

returns Tuesday .

But beware that new SimpleDateFormat(..) is expensive .