將日期和時間轉換為毫秒

Question

我有2個輸入字段日期和時間

ex: 23/05/2014 as date and 5:30 as time (24 hour format)

我如何在Java中將這2個輸入轉換為毫秒

謝謝

Answer 1

也許這可以幫助您：

String dstr = ... // from date input field
String tstr = ... // from time input field

String pattern = "dd/MM/yyyy H:mm";
String dateTimeStr = dstr + " " + tstr;

SimpleDateFormat fmt = new SimpleDateFormat(pattern);
try {
    Date date = fmt.parse(dateTimeStr);
    long msecs = date.getTime();
} catch (ParseException ex) {
    // Handle parsing error here
}

Answer 2

String givenDateString = "Tue Apr 23 16:08:28 GMT+05:30 2013"; 
SimpleDateFormat sdf = new SimpleDateFormat("EEE MMM dd HH:mm:ss z yyyy");
try {
    Date mDate = sdf.parse(givenDateString);
    long timeInMilliseconds = mDate.getTime();
    System.out.println("Date in milli :: " + timeInMilliseconds);
} catch (ParseException e) {
            e.printStackTrace();
}