give us the full stacktrace please
-igor
On 2/26/07, Stewr <[EMAIL PROTECTED]> wrote:
Thanks for the quick reply...procedure is not null at any point when this
error is occurring.
igor.vaynberg wrote:
>
> List procedure = (List) item.getModelObject();
> item.add(new Label("equipment", (String)
> procedure.get(0)));
>
> can procedure be null? because thats what it looks like.
>
> -igor
>
>
>
> On 2/26/07, Stewr <[EMAIL PROTECTED]> wrote:
>>
>>
>> I'm using Wicket 1.2.4 and working with a simple page to show a
ListView.
>> Here is the constructor for the page.
>>
>> public Results(List resultsList) {
>> ListView procedures = new ListView("procedures", resultsList) {
>>
>> protected void populateItem(ListItem item) {
>>
>> List procedure = (List) item.getModelObject();
>> item.add(new Label("equipment", (String) procedure.get
>> (0)));
>> }
>>
>> };
>> add(procedures);
>>
>> }
>>
>> I call this constructor from the submit button on another page.
>>
>> searchForm.add(new Button("search"){
>>
>> protected void onSubmit() {
>>
>> try {
>> List results =
>> lotusService.getLockoutsUsingEquipmentSearch(getSearchCriteria());
>> if(results.size() >0){
>> setResponsePage(new Results(results));
>> }
>>
>> } catch (LotusServiceException e) {
>> e.printStackTrace();
>> }
>> }
>> });
>>
>> The results page is very simple.
>> <html>
>> <head>
>> <title>List of Procedures</title>
>> </head>
>>
>> <body>
>> Hello
>> <table>
>> <tr wicket:id="procedures">
>> <td><span wicket:id="equipment"/></td>
>> </tr>
>> </table>
>>
>> </body>
>> </html>
>>
>>
>> What happens is that I get a null pointer exception thrown on ListView
>> procedures = new ListView("procedures", resultsList). The null pointer
>> states Method threw 'java.lang.NullPointerException' exception. Cannot
>> evaluate com.dmflavors.lockout.view.pages.Results$1.toString(). The
>> program
>> is not stopped by the exception and the Results page is rendered but
>> without
>> any ListView. The resultsList list referred to in the ListView call is
>> populated with values, which are actually other lists...so it is a List
>> of
>> Lists. Any help would be appreciated.
>>
>> --
>> View this message in context:
>>
http://www.nabble.com/Newbie-%3A-Null-Pointer-on-Page-tf3293675.html#a9161474
>> Sent from the Wicket - User mailing list archive at Nabble.com.
>>
>>
>>
-------------------------------------------------------------------------
>> Take Surveys. Earn Cash. Influence the Future of IT
>> Join SourceForge.net's Techsay panel and you'll get the chance to share
>> your
>> opinions on IT & business topics through brief surveys-and earn cash
>>
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
>> _______________________________________________
>> Wicket-user mailing list
>> [email protected]
>> https://lists.sourceforge.net/lists/listinfo/wicket-user
>>
>
>
-------------------------------------------------------------------------
> Take Surveys. Earn Cash. Influence the Future of IT
> Join SourceForge.net's Techsay panel and you'll get the chance to share
> your
> opinions on IT & business topics through brief surveys-and earn cash
>
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
> _______________________________________________
> Wicket-user mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/wicket-user
>
>
--
View this message in context:
http://www.nabble.com/Newbie-%3A-Null-Pointer-on-Page-tf3293675.html#a9162055
Sent from the Wicket - User mailing list archive at Nabble.com.
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share
your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Wicket-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/wicket-user
-------------------------------------------------------------------------
Take Surveys. Earn Cash. Influence the Future of IT
Join SourceForge.net's Techsay panel and you'll get the chance to share your
opinions on IT & business topics through brief surveys-and earn cash
http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV
_______________________________________________
Wicket-user mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/wicket-user
