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  1. #1
    Dave is offline Member
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    Jul 2008
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    Default saving date and time in a derby database from an ejb module

    I can easily save and retrieve a date from an ejb application (creating a derby table with Date as one of the fields - automatically generating the entity class, -creating a session facade bean and creating a client) - but if the date also contains a time the time doesn't seemed to get stored in the table. I used DateFormat df = DateFormat.getDateTimeInstance();
    df.parse("15-Jun-2009 14:19:50") in the client
    I know the session bean gets the date and time, but when I retrieve the date/time from the table I only get the date - not the time. Does anybody know how to do this or point me to an example which will show me?
    Thank you

  2. #2
    linuxswan is offline Member
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    Mar 2008
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    import java.text.DateFormat;
    import java.text.ParseException;
    import java.util.Date;

    public class DateFormatExample2 {

    public static void main(String[] args) {
    // Make a String that has a date in it, with MEDIUM date format
    // and SHORT time format.
    String dateString = xxxxxxxxxxx

    " retrieve the datestring from the database for example - Nov 4, 2003 8:14 PM i.e the connection settings from the database and etc., Connection, Statement, ResultSet"

    // Get the default MEDIUM/SHORT DateFormat
    DateFormat format =
    DateFormat.MEDIUM, DateFormat.SHORT);

    // Parse the date
    try {
    Date date = format.parse(dateString);
    System.out.println("Original string: " + dateString);
    System.out.println("Parsed date : " +
    catch(ParseException pe) {
    System.out.println("ERROR: could not parse date in string \"" +
    dateString + "\"");

    Ok this logic or the example program will help you

    i hope you will get the results
    Last edited by linuxswan; 07-19-2008 at 09:58 AM.

  3. #3
    Dave is offline Member
    Join Date
    Jul 2008
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    Smile solution to problem

    Hi, I've solved my problem. The problem was that it wasn't saving time information to the database table where the column was of type Date, it just saved the date part not the time. When net beans generated the entity classes form the database the temporal annotation that was added was @Temporal(TemporalType.DATE) when I changed this to @Temporal(TemporalType.TIMESTAMP) everthing worked fine. Thanks to everybody who posted a reply

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