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Posted to users@wicket.apache.org by Branden Tanga <br...@gmail.com> on 2009/04/06 12:46:21 UTC
Runtime error with TabbedPanel and AbstractTab (I know it's my
mistake somewhere)
Hello all,
I'm trying to follow the examples given on wicketstuff.org for TabbedPanel
here: http://tinyurl.com/cpzkas
My code compiles fine, but when I run it I get a noclassdeffound error for
AbstractTab. Here's my snippet of code:
import org.apache.wicket.markup.html.WebPage;
import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
import org.apache.wicket.extensions.markup.html.tabs.*;
import org.apache.wicket.markup.html.panel.*;
import org.apache.wicket.model.*;
import java.util.*;
public class MainMenu extends WebPage{
/*Constructor*/
public MainMenu() {
List<ITab> tabs = new ArrayList<ITab>();
tabs.add(new AbstractTab(new Model("first tab")) {
@Override
public Panel getPanel(String panelID) {
return new MyPanel(panelID);
}
});
} // end constructor
and here's the corresponding runtime error:
WicketMessage: Method onFormSubmitted of interface
org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
component [MarkupContainer [Component id = loginForm]] threw an
exception
Root cause:
java.lang.NoClassDefFoundError:
org/apache/wicket/extensions/markup/html/tabs/AbstractTab
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:675)........
This makes sense, as you can't directly instantiate an abstract class right?
You have to extend it and then implement the subclass. But I am following
the code example as closely as I can, and I still do not understand what I
am doing wrong.
Thanks,
Branden Tanga
Programmer / EHR Systems Engineer
Re: Runtime error with TabbedPanel and AbstractTab (I know it's my
mistake somewhere)
Posted by Branden Tanga <br...@gmail.com>.
Also, forgot to say thanks everyone!
Thanks,
Branden Tanga
Programmer / EHR Systems Engineer
On Wed, Apr 8, 2009 at 2:05 AM, Branden Tanga <br...@gmail.com>wrote:
> That was it! I guess I should get into the habit of managing maven and then
> "pushing" those changes out to eclipse with a mvn clean then a mvn eclipse.
>
>
> Thanks,
> Branden Tanga
> Programmer / EHR Systems Engineer
>
>
> On Wed, Apr 8, 2009 at 1:11 AM, Daan van Etten <da...@stuq.nl> wrote:
>
>> Hi,
>>
>> Maven should handle your dependencies. Have you added the wicket
>> extensions dependency to your pom.xml?
>>
>> Add this to the 'dependencies' tag of your pom.xml. The Wicket dependency
>> should already be there.
>>
>> <dependency>
>> <groupId>org.apache.wicket</groupId>
>> <artifactId>wicket-extensions</artifactId>
>> <version>1.3.5</version>
>> </dependency>
>>
>> Change the 'version' according to which version of Wicket you use.
>>
>> Eclipse should add Wicket extensions to your classpath when you have this
>> dependency. (maybe with a mvn clean eclipse command)
>>
>>
>> Regards,
>>
>> Daan van Etten
>>
>> Op 8 apr 2009, om 12:49 heeft Branden Tanga het volgende geschreven:
>>
>>
>> Ok, I've been racking my brain for the past few days, and I still cannot
>>> solve this.
>>> I've even added wicket-extensions.jar to my .m2/repository and rebuilt my
>>> eclipse project with the mvn clean and mvn eclipse commands given in the
>>> wicket quickstart. When I open up my eclipse project, under m2_repo I can
>>> find my wicket-extensions.jar
>>>
>>> I still get a noclassdeffound runtime error for AbstractTab. It seems as
>>> if
>>> the classpath that eclipse uses for compiling has nothing to do with the
>>> classpath that wicket uses at runtime. How can I print my classpath from
>>> within wicket?
>>>
>>> (note: I've already added the directory that contains
>>> wicket-extensions.jar
>>> to my classpath variable in my .bash_profile, still the same runtime
>>> error).
>>>
>>> Thanks,
>>> Branden Tanga
>>> Programmer / EHR Systems Engineer
>>>
>>>
>>> On Mon, Apr 6, 2009 at 1:24 AM, mailinglist@jorgenpersson.se <
>>> mailinglist@jorgenpersson.se> wrote:
>>>
>>> Hi.
>>>>
>>>> Seems like you're missing a jar file. The
>>>> "java.lang.NoClassDefFoundError"
>>>> means just what it sais. The class can not be found in the classpath.
>>>> It has nothing to do whether the class is abstract or not.
>>>>
>>>> /Jörgen
>>>>
>>>> Branden Tanga skrev:
>>>>
>>>> Hello all,
>>>>
>>>>> I'm trying to follow the examples given on wicketstuff.org for
>>>>> TabbedPanel
>>>>> here: http://tinyurl.com/cpzkas
>>>>>
>>>>> My code compiles fine, but when I run it I get a noclassdeffound error
>>>>> for
>>>>> AbstractTab. Here's my snippet of code:
>>>>>
>>>>> import org.apache.wicket.markup.html.WebPage;
>>>>>
>>>>> import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
>>>>>
>>>>> import org.apache.wicket.extensions.markup.html.tabs.*;
>>>>>
>>>>> import org.apache.wicket.markup.html.panel.*;
>>>>>
>>>>> import org.apache.wicket.model.*;
>>>>>
>>>>> import java.util.*;
>>>>>
>>>>>
>>>>> public class MainMenu extends WebPage{
>>>>>
>>>>> /*Constructor*/
>>>>>
>>>>> public MainMenu() {
>>>>>
>>>>> List<ITab> tabs = new ArrayList<ITab>();
>>>>>
>>>>> tabs.add(new AbstractTab(new Model("first tab")) {
>>>>>
>>>>> @Override
>>>>>
>>>>> public Panel getPanel(String panelID) {
>>>>>
>>>>> return new MyPanel(panelID);
>>>>>
>>>>> }
>>>>>
>>>>> });
>>>>>
>>>>> } // end constructor
>>>>>
>>>>> and here's the corresponding runtime error:
>>>>>
>>>>> WicketMessage: Method onFormSubmitted of interface
>>>>> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
>>>>> component [MarkupContainer [Component id = loginForm]] threw an
>>>>> exception
>>>>>
>>>>> Root cause:
>>>>>
>>>>> java.lang.NoClassDefFoundError:
>>>>> org/apache/wicket/extensions/markup/html/tabs/AbstractTab
>>>>> at java.lang.ClassLoader.defineClass1(Native Method)
>>>>> at java.lang.ClassLoader.defineClass(ClassLoader.java:675)........
>>>>>
>>>>> This makes sense, as you can't directly instantiate an abstract class
>>>>> right?
>>>>> You have to extend it and then implement the subclass. But I am
>>>>> following
>>>>> the code example as closely as I can, and I still do not understand
>>>>> what I
>>>>> am doing wrong.
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Branden Tanga
>>>>> Programmer / EHR Systems Engineer
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>> ---------------------------------------------------------------------
>>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>>
>>>>
>>>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
>
Re: Runtime error with TabbedPanel and AbstractTab (I know it's my
mistake somewhere)
Posted by Branden Tanga <br...@gmail.com>.
That was it! I guess I should get into the habit of managing maven and then
"pushing" those changes out to eclipse with a mvn clean then a mvn eclipse.
Thanks,
Branden Tanga
Programmer / EHR Systems Engineer
On Wed, Apr 8, 2009 at 1:11 AM, Daan van Etten <da...@stuq.nl> wrote:
> Hi,
>
> Maven should handle your dependencies. Have you added the wicket extensions
> dependency to your pom.xml?
>
> Add this to the 'dependencies' tag of your pom.xml. The Wicket dependency
> should already be there.
>
> <dependency>
> <groupId>org.apache.wicket</groupId>
> <artifactId>wicket-extensions</artifactId>
> <version>1.3.5</version>
> </dependency>
>
> Change the 'version' according to which version of Wicket you use.
>
> Eclipse should add Wicket extensions to your classpath when you have this
> dependency. (maybe with a mvn clean eclipse command)
>
>
> Regards,
>
> Daan van Etten
>
> Op 8 apr 2009, om 12:49 heeft Branden Tanga het volgende geschreven:
>
>
> Ok, I've been racking my brain for the past few days, and I still cannot
>> solve this.
>> I've even added wicket-extensions.jar to my .m2/repository and rebuilt my
>> eclipse project with the mvn clean and mvn eclipse commands given in the
>> wicket quickstart. When I open up my eclipse project, under m2_repo I can
>> find my wicket-extensions.jar
>>
>> I still get a noclassdeffound runtime error for AbstractTab. It seems as
>> if
>> the classpath that eclipse uses for compiling has nothing to do with the
>> classpath that wicket uses at runtime. How can I print my classpath from
>> within wicket?
>>
>> (note: I've already added the directory that contains
>> wicket-extensions.jar
>> to my classpath variable in my .bash_profile, still the same runtime
>> error).
>>
>> Thanks,
>> Branden Tanga
>> Programmer / EHR Systems Engineer
>>
>>
>> On Mon, Apr 6, 2009 at 1:24 AM, mailinglist@jorgenpersson.se <
>> mailinglist@jorgenpersson.se> wrote:
>>
>> Hi.
>>>
>>> Seems like you're missing a jar file. The
>>> "java.lang.NoClassDefFoundError"
>>> means just what it sais. The class can not be found in the classpath.
>>> It has nothing to do whether the class is abstract or not.
>>>
>>> /Jörgen
>>>
>>> Branden Tanga skrev:
>>>
>>> Hello all,
>>>
>>>> I'm trying to follow the examples given on wicketstuff.org for
>>>> TabbedPanel
>>>> here: http://tinyurl.com/cpzkas
>>>>
>>>> My code compiles fine, but when I run it I get a noclassdeffound error
>>>> for
>>>> AbstractTab. Here's my snippet of code:
>>>>
>>>> import org.apache.wicket.markup.html.WebPage;
>>>>
>>>> import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
>>>>
>>>> import org.apache.wicket.extensions.markup.html.tabs.*;
>>>>
>>>> import org.apache.wicket.markup.html.panel.*;
>>>>
>>>> import org.apache.wicket.model.*;
>>>>
>>>> import java.util.*;
>>>>
>>>>
>>>> public class MainMenu extends WebPage{
>>>>
>>>> /*Constructor*/
>>>>
>>>> public MainMenu() {
>>>>
>>>> List<ITab> tabs = new ArrayList<ITab>();
>>>>
>>>> tabs.add(new AbstractTab(new Model("first tab")) {
>>>>
>>>> @Override
>>>>
>>>> public Panel getPanel(String panelID) {
>>>>
>>>> return new MyPanel(panelID);
>>>>
>>>> }
>>>>
>>>> });
>>>>
>>>> } // end constructor
>>>>
>>>> and here's the corresponding runtime error:
>>>>
>>>> WicketMessage: Method onFormSubmitted of interface
>>>> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
>>>> component [MarkupContainer [Component id = loginForm]] threw an
>>>> exception
>>>>
>>>> Root cause:
>>>>
>>>> java.lang.NoClassDefFoundError:
>>>> org/apache/wicket/extensions/markup/html/tabs/AbstractTab
>>>> at java.lang.ClassLoader.defineClass1(Native Method)
>>>> at java.lang.ClassLoader.defineClass(ClassLoader.java:675)........
>>>>
>>>> This makes sense, as you can't directly instantiate an abstract class
>>>> right?
>>>> You have to extend it and then implement the subclass. But I am
>>>> following
>>>> the code example as closely as I can, and I still do not understand what
>>>> I
>>>> am doing wrong.
>>>>
>>>>
>>>>
>>>> Thanks,
>>>> Branden Tanga
>>>> Programmer / EHR Systems Engineer
>>>>
>>>>
>>>>
>>>>
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>>> For additional commands, e-mail: users-help@wicket.apache.org
>>>
>>>
>>>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
Re: Runtime error with TabbedPanel and AbstractTab (I know it's my mistake somewhere)
Posted by Daan van Etten <da...@stuq.nl>.
Hi,
Maven should handle your dependencies. Have you added the wicket
extensions dependency to your pom.xml?
Add this to the 'dependencies' tag of your pom.xml. The Wicket
dependency should already be there.
<dependency>
<groupId>org.apache.wicket</groupId>
<artifactId>wicket-extensions</artifactId>
<version>1.3.5</version>
</dependency>
Change the 'version' according to which version of Wicket you use.
Eclipse should add Wicket extensions to your classpath when you have
this dependency. (maybe with a mvn clean eclipse command)
Regards,
Daan van Etten
Op 8 apr 2009, om 12:49 heeft Branden Tanga het volgende geschreven:
> Ok, I've been racking my brain for the past few days, and I still
> cannot
> solve this.
> I've even added wicket-extensions.jar to my .m2/repository and
> rebuilt my
> eclipse project with the mvn clean and mvn eclipse commands given in
> the
> wicket quickstart. When I open up my eclipse project, under m2_repo
> I can
> find my wicket-extensions.jar
>
> I still get a noclassdeffound runtime error for AbstractTab. It
> seems as if
> the classpath that eclipse uses for compiling has nothing to do with
> the
> classpath that wicket uses at runtime. How can I print my classpath
> from
> within wicket?
>
> (note: I've already added the directory that contains wicket-
> extensions.jar
> to my classpath variable in my .bash_profile, still the same runtime
> error).
>
> Thanks,
> Branden Tanga
> Programmer / EHR Systems Engineer
>
>
> On Mon, Apr 6, 2009 at 1:24 AM, mailinglist@jorgenpersson.se <
> mailinglist@jorgenpersson.se> wrote:
>
>> Hi.
>>
>> Seems like you're missing a jar file. The
>> "java.lang.NoClassDefFoundError"
>> means just what it sais. The class can not be found in the classpath.
>> It has nothing to do whether the class is abstract or not.
>>
>> /Jörgen
>>
>> Branden Tanga skrev:
>>
>> Hello all,
>>> I'm trying to follow the examples given on wicketstuff.org for
>>> TabbedPanel
>>> here: http://tinyurl.com/cpzkas
>>>
>>> My code compiles fine, but when I run it I get a noclassdeffound
>>> error for
>>> AbstractTab. Here's my snippet of code:
>>>
>>> import org.apache.wicket.markup.html.WebPage;
>>>
>>> import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
>>>
>>> import org.apache.wicket.extensions.markup.html.tabs.*;
>>>
>>> import org.apache.wicket.markup.html.panel.*;
>>>
>>> import org.apache.wicket.model.*;
>>>
>>> import java.util.*;
>>>
>>>
>>> public class MainMenu extends WebPage{
>>>
>>> /*Constructor*/
>>>
>>> public MainMenu() {
>>>
>>> List<ITab> tabs = new ArrayList<ITab>();
>>>
>>> tabs.add(new AbstractTab(new Model("first tab")) {
>>>
>>> @Override
>>>
>>> public Panel getPanel(String panelID) {
>>>
>>> return new MyPanel(panelID);
>>>
>>> }
>>>
>>> });
>>>
>>> } // end constructor
>>>
>>> and here's the corresponding runtime error:
>>>
>>> WicketMessage: Method onFormSubmitted of interface
>>> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
>>> component [MarkupContainer [Component id = loginForm]] threw an
>>> exception
>>>
>>> Root cause:
>>>
>>> java.lang.NoClassDefFoundError:
>>> org/apache/wicket/extensions/markup/html/tabs/AbstractTab
>>> at java.lang.ClassLoader.defineClass1(Native Method)
>>> at java.lang.ClassLoader.defineClass(ClassLoader.java:
>>> 675)........
>>>
>>> This makes sense, as you can't directly instantiate an abstract
>>> class
>>> right?
>>> You have to extend it and then implement the subclass. But I am
>>> following
>>> the code example as closely as I can, and I still do not
>>> understand what I
>>> am doing wrong.
>>>
>>>
>>>
>>> Thanks,
>>> Branden Tanga
>>> Programmer / EHR Systems Engineer
>>>
>>>
>>>
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
>> For additional commands, e-mail: users-help@wicket.apache.org
>>
>>
---------------------------------------------------------------------
To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
For additional commands, e-mail: users-help@wicket.apache.org
Re: Runtime error with TabbedPanel and AbstractTab (I know it's my
mistake somewhere)
Posted by Branden Tanga <br...@gmail.com>.
Ok, I've been racking my brain for the past few days, and I still cannot
solve this.
I've even added wicket-extensions.jar to my .m2/repository and rebuilt my
eclipse project with the mvn clean and mvn eclipse commands given in the
wicket quickstart. When I open up my eclipse project, under m2_repo I can
find my wicket-extensions.jar
I still get a noclassdeffound runtime error for AbstractTab. It seems as if
the classpath that eclipse uses for compiling has nothing to do with the
classpath that wicket uses at runtime. How can I print my classpath from
within wicket?
(note: I've already added the directory that contains wicket-extensions.jar
to my classpath variable in my .bash_profile, still the same runtime error).
Thanks,
Branden Tanga
Programmer / EHR Systems Engineer
On Mon, Apr 6, 2009 at 1:24 AM, mailinglist@jorgenpersson.se <
mailinglist@jorgenpersson.se> wrote:
> Hi.
>
> Seems like you're missing a jar file. The "java.lang.NoClassDefFoundError"
> means just what it sais. The class can not be found in the classpath.
> It has nothing to do whether the class is abstract or not.
>
> /Jörgen
>
> Branden Tanga skrev:
>
> Hello all,
>> I'm trying to follow the examples given on wicketstuff.org for
>> TabbedPanel
>> here: http://tinyurl.com/cpzkas
>>
>> My code compiles fine, but when I run it I get a noclassdeffound error for
>> AbstractTab. Here's my snippet of code:
>>
>> import org.apache.wicket.markup.html.WebPage;
>>
>> import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
>>
>> import org.apache.wicket.extensions.markup.html.tabs.*;
>>
>> import org.apache.wicket.markup.html.panel.*;
>>
>> import org.apache.wicket.model.*;
>>
>> import java.util.*;
>>
>>
>> public class MainMenu extends WebPage{
>>
>> /*Constructor*/
>>
>> public MainMenu() {
>>
>> List<ITab> tabs = new ArrayList<ITab>();
>>
>> tabs.add(new AbstractTab(new Model("first tab")) {
>>
>> @Override
>>
>> public Panel getPanel(String panelID) {
>>
>> return new MyPanel(panelID);
>>
>> }
>>
>> });
>>
>> } // end constructor
>>
>> and here's the corresponding runtime error:
>>
>> WicketMessage: Method onFormSubmitted of interface
>> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
>> component [MarkupContainer [Component id = loginForm]] threw an
>> exception
>>
>> Root cause:
>>
>> java.lang.NoClassDefFoundError:
>> org/apache/wicket/extensions/markup/html/tabs/AbstractTab
>> at java.lang.ClassLoader.defineClass1(Native Method)
>> at java.lang.ClassLoader.defineClass(ClassLoader.java:675)........
>>
>> This makes sense, as you can't directly instantiate an abstract class
>> right?
>> You have to extend it and then implement the subclass. But I am following
>> the code example as closely as I can, and I still do not understand what I
>> am doing wrong.
>>
>>
>>
>> Thanks,
>> Branden Tanga
>> Programmer / EHR Systems Engineer
>>
>>
>>
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: users-unsubscribe@wicket.apache.org
> For additional commands, e-mail: users-help@wicket.apache.org
>
>
Re: Runtime error with TabbedPanel and AbstractTab (I know it's my
mistake somewhere)
Posted by "mailinglist@jorgenpersson.se" <ma...@jorgenpersson.se>.
Hi.
Seems like you're missing a jar file. The
"java.lang.NoClassDefFoundError" means just what it sais. The class can
not be found in the classpath.
It has nothing to do whether the class is abstract or not.
/Jörgen
Branden Tanga skrev:
> Hello all,
> I'm trying to follow the examples given on wicketstuff.org for TabbedPanel
> here: http://tinyurl.com/cpzkas
>
> My code compiles fine, but when I run it I get a noclassdeffound error for
> AbstractTab. Here's my snippet of code:
>
> import org.apache.wicket.markup.html.WebPage;
>
> import org.apache.wicket.extensions.ajax.markup.html.tabs.*;
>
> import org.apache.wicket.extensions.markup.html.tabs.*;
>
> import org.apache.wicket.markup.html.panel.*;
>
> import org.apache.wicket.model.*;
>
> import java.util.*;
>
>
> public class MainMenu extends WebPage{
>
> /*Constructor*/
>
> public MainMenu() {
>
> List<ITab> tabs = new ArrayList<ITab>();
>
> tabs.add(new AbstractTab(new Model("first tab")) {
>
> @Override
>
> public Panel getPanel(String panelID) {
>
> return new MyPanel(panelID);
>
> }
>
> });
>
> } // end constructor
>
> and here's the corresponding runtime error:
>
> WicketMessage: Method onFormSubmitted of interface
> org.apache.wicket.markup.html.form.IFormSubmitListener targeted at
> component [MarkupContainer [Component id = loginForm]] threw an
> exception
>
> Root cause:
>
> java.lang.NoClassDefFoundError:
> org/apache/wicket/extensions/markup/html/tabs/AbstractTab
> at java.lang.ClassLoader.defineClass1(Native Method)
> at java.lang.ClassLoader.defineClass(ClassLoader.java:675)........
>
> This makes sense, as you can't directly instantiate an abstract class right?
> You have to extend it and then implement the subclass. But I am following
> the code example as closely as I can, and I still do not understand what I
> am doing wrong.
>
>
>
> Thanks,
> Branden Tanga
> Programmer / EHR Systems Engineer
>
>
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