> In that case, I think > that the only way to get the user's preference is to ask them.
Building on this, if you want the user to choose their own format, let them do so. Then, when you pull the date from the database (stored as a date, not a String), you can format that Date object using GWT's DateTimeFormat (http://google-web-toolkit.googlecode.com/svn/javadoc/1.5/com/google/gwt/i18n/client/DateTimeFormat.html) in the format the client request it. -- Arthur Kalmenson On Wed, Apr 22, 2009 at 11:28 AM, Ian Bambury <[email protected]> wrote: > Priya, you can't do what you are asking. > If you are storing a datestamp in a database then you will probably be > storing the number of milliseconds since 01 Jan 1970. Whatever format you > pass to the database, if it can understand it, it will convert it to that. > In a lot of cases, it will guess wrong, yyyy-mm-dd HH:mm:ss is usually safe. > If you are storing it as text, then that is different. In that case, I think > that the only way to get the user's preference is to ask them. > Ian > > http://examples.roughian.com > > > 2009/4/22 priya <[email protected]> >> >> I got what you explained. >> >> I am sending client side date as follows: >> >> Date executionDate = new java.uti.Date(); >> >> and storing id database same as u told like: >> >> Timestamp executionTimestamp = new Timestamp(executionDate.getTime >> ()); >> >> But my problem is that I want to store the time in the format same as >> client side. >> Means if client side time is 03:45PM then it should save 03:45 and not >> 15:45. >> And if client side time is 15:45 then it should save 15:45. >> >> But I am getting time as 15:45 if my system time is 03:45PM. >> >> I hope u got my problem. >> >> Please help me to solve this problem. >> >> On Apr 22, 6:08 pm, Salvador Diaz <[email protected]> wrote: >> > > but if client side time is in 12hr format then also I am getting 24hr >> > > format time. >> > >> > What do you mean by that ? Could you be more clear ? I want to help >> > you but I need to know what it is that you're not understanding from >> > what I told you. >> > >> > Maybe paste some code snippets that'll show me how you're tackling >> > this problem because time formats have nothing to do with storing a >> > timestamp. >> > >> > Normally this is what you should do: >> > >> > //client-side: instantiate a date and send it to server to be stored >> > Date executionDate = new Date(); >> > SomeRPCAsyncInterface.storeDate(executionDate, someCallback); >> > >> > //server-side: >> > public void storeDate(Date executionDate){ >> > Timestamp executionTimestamp = new Timestamp(executionDate.getTime >> > ()); >> > //the code to persist the timestamp, (JDBC, hibernate, or whatever >> > you use to store things in your database) >> > >> > } >> > >> > So there it is, no need to use formatters anywhere. >> > >> > I hope it's clearer now. If it isn't you should familiarize yourself >> > with the way the Date object works and its API >> > >> > Good luck, >> > >> > Salvador >> > >> > On Apr 22, 2:49 pm, priya <[email protected]> wrote: >> > >> > > Yeah I can do that.. >> > > but if client side time is in 12hr format then also I am getting 24hr >> > > format time. >> > >> > > For 24hr format time it is giving correct time. >> > >> > > I want to save the time same as client time (client system time). >> > >> > > How can I do this? >> > >> > > On Apr 22, 5:32 pm, Salvador Diaz <[email protected]> wrote: >> > >> > > > Well then pass a java.util.Date object instantiated at the >> > > > client-side >> > > > through a RPC and store it. No need to format anything. >> > >> > > > On Apr 22, 2:10 pm, priya <[email protected]> wrote: >> > >> > > > > I don't want server side date time. >> > > > > I want to store client side date time as Timestamp in database. >> > >> > > > > On Apr 22, 4:20 pm, Salvador Diaz <[email protected]> wrote: >> > >> > > > > > Sorry but I'm still not understanding exactly what you're trying >> > > > > > to >> > > > > > do. >> > >> > > > > > I got the part where you're saying that you want to store a >> > > > > > timestamp >> > > > > > in a database. But is it the server-side time or client-side >> > > > > > time ? >> > >> > > > > > Either way, you shouldn't need to format dates to do that, just >> > > > > > pass >> > > > > > the java.util.Date object in your RPCs and then instantiate your >> > > > > > timestamp from the date object before storing it in the >> > > > > > database. >> > >> > > > > > What are you're storing those timestamps for ? Because depending >> > > > > > on >> > > > > > that, you might not want to trust the dates handed to you by >> > > > > > your >> > > > > > clients and instead use the date of the actions you want to >> > > > > > timestamp >> > > > > > in the server side of your code. >> > >> > > > > > On Apr 22, 12:38 pm, priya <[email protected]> wrote: >> > >> > > > > > > I want to send current date time as String at server side and >> > > > > > > then I am converting this String to java.sql.TimeStamp to >> > > > > > > store into >> > > > > > > database. >> > >> > > > > > > But I want to store the system date and time. >> > > > > > > And to format this date time at client side I want whether the >> > > > > > > system >> > > > > > > time is in 12hr or 24hr format. >> > >> > > > > > > According to that I am using DatTimeFormat. >> > >> > > > > > > Is there any other way to do this? >> > > > > > > I want to use this in my GWT application. >> > >> > > > > > > On Apr 22, 3:25 pm, Salvador Diaz <[email protected]> >> > > > > > > wrote: >> > >> > > > > > > > > So I have to know the 12hr or 24 hr format for system time >> > > > > > > > > to use the >> > > > > > > > > DateTimeFormat. >> > >> > > > > > > > No you don't. You decide what format you want to display and >> > > > > > > > use the >> > > > > > > > corresponding pattern in the getFormat method. >> > >> > > > > > > > If you want to display a date in the 24h format, you have to >> > > > > > > > do: >> > > > > > > > Date myDate = new Date(); >> > > > > > > > String formattedDate = DateTimeFormat.getFormat("dd/MM/yyyy >> > > > > > > > HH:mm").format(myDate); >> > >> > > > > > > > If you want to display it in the 12h format you do: >> > > > > > > > String formattedDate = DateTimeFormat.getFormat("dd/MM/yyyy >> > > > > > > > hh:mm").format(myDate); >> > >> > > > > > > > But please tell us what you're trying to do exactly, maybe >> > > > > > > > I'm missing >> > > > > > > > something. >> > >> > > > > > > > On Apr 22, 12:15 pm, priya <[email protected]> wrote: >> > >> > > > > > > > > Thanks for reply.. >> > > > > > > > > I want to know the format of the time at client side >> > > > > > > > > whether it is >> > > > > > > > > 12hr or 24hr.. >> > > > > > > > > because I am using: >> > >> > > > > > > > > DateTimeFormat to format my date. >> > > > > > > > > It is given that DateTimeFormat.getFormat("dd/MM/yyyy >> > > > > > > > > HH:mm") provides >> > > > > > > > > 24 hr format and >> > > > > > > > > DateTimeFormat.getFormat("dd/MM/yyyy hh:mm") provides 12hr >> > > > > > > > > format. >> > > > > > > > > (Note HH and hh). >> > >> > > > > > > > > I am doing this at client side. >> > > > > > > > > So I have to know the 12hr or 24 hr format for system time >> > > > > > > > > to use the >> > > > > > > > > DateTimeFormat. >> > >> > > > > > > > > how can i get this? >> > > > > > > > > I hope u got my question.. >> > >> > > > > > > > > On Apr 22, 2:37 pm, Vitali Lovich <[email protected]> >> > > > > > > > > wrote: >> > >> > > > > > > > > > Not sure what your question is. Are you trying to >> > > > > > > > > > format for display? Are >> > > > > > > > > > you trying to parse input? Trying to determine >> > > > > > > > > > something else? >> > >> > > > > > > > > > Formatting & parsing already done for >> > > > > > > > > > you:http://google-web-toolkit.googlecode.com/svn/javadoc/1.4/com/google/g... >> > >> > > > > > > > > > A hack (unless there's no better way) would be to use >> > > > > > > > > > DateTimeFormat to >> > > > > > > > > > format a date so it displays a known time like year 0, >> > > > > > > > > > month 1, day of month >> > > > > > > > > > 1, hour 23, minute 0, second 0. Then search for the >> > > > > > > > > > number 23 in the >> > > > > > > > > > formatted string - if it's there, you're on military >> > > > > > > > > > time - otherwise AM/PM. >> > >> > > > > > > > > > However, this obviously has downsides because it makes >> > > > > > > > > > assumptions about how >> > > > > > > > > > the locale formats the time (in particular assumes >> > > > > > > > > > arabic numbers for time >> > > > > > > > > > format). >> > >> > > > > > > > > > On Wed, Apr 22, 2009 at 5:12 AM, priya >> > > > > > > > > > <[email protected]> wrote: >> > >> > > > > > > > > > > Hi all, >> > >> > > > > > > > > > > In my GWT application I want to know the time format >> > > > > > > > > > > of the system >> > > > > > > > > > > time >> > > > > > > > > > > whether its 12 hr or 24hr at client side. >> > >> > > > > > > > > > > How can i get this? >> > >> > > > > > > > > > > Can anyone help me? >> > >> > > > > > > > > > > Its really urgent... >> > >> > > > > > > > > > > Thanks, >> > > > > > > > > > > Priya >> > >> > >> > > > > > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. 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