NoClassDefFoundError: for WDPortalServiceType class

Hi All, i want to get visible no of iViews in a page.
Here is my code:
[code]
IWDPageService pageService = (IWDPageService)
WDPortalUtils.getService(WDPortalServiceType.PAGE_SERVICE);
//String array receives iView names
String[] iViews = pageService.getVisibleIViews();
for(int i=0;i<iViews.length;i++){
 response.write(" iView["i"]=="+iViews);
}[/code]
I get:
[code]Portal Runtime Error
An exception occurred while processing a request for :
iView : pcd:portal_content/ABCproject/kk/RandDFolder/role1/workset1/page7/SD_iView
Component Name : TestEPProject.TestAPC
com/sap/tc/webdynpro/clientserver/portal/sf/WDPortalServiceType.
Exception id: 02:51_13/10/06_0090_3385450
See the details for the exception ID in the log file[/code]
[code]
com.sapportals.portal.prt.component.PortalComponentException: Error in service call of Portal Component
Component : pcd:portal_content/ABCproject/kk/RandDFolder/role1/workset1/page7/SD_iView
Component class : com.test.apc.TestAPC
User : ab12345
 at com.sapportals.portal.prt.core.PortalRequestManager.handlePortalComponentException(PortalRequestManager.java:969)
 at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:343)
 at com.sapportals.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:136)
 at com.sapportals.portal.prt.core.async.AsyncIncludeRunnable$1$DoDispatchRequest.run(AsyncIncludeRunnable.java:377)
 at java.security.AccessController.doPrivileged(Native Method)
 at com.sapportals.portal.prt.core.async.AsyncIncludeRunnable.run(AsyncIncludeRunnable.java:390)
 at com.sapportals.portal.prt.core.async.ThreadContextRunnable.run(ThreadContextRunnable.java:164)
 at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:729)
 at java.lang.Thread.run(Thread.java:534)
Caused by: java.lang.NoClassDefFoundError: com/sap/tc/webdynpro/clientserver/portal/sf/WDPortalServiceType
 at com.test.apc.TestAPC.doContent(TestAPC.java:57)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:209)
 at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:114)
 at com.sapportals.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:328)
 ... 7 more
[/code]
I understood that the reference to the class is "com/sap/tc/webdynpro/clientserver/portal/sf/WDPortalServiceType" not there at runtime ?? ..
In which folder should i place the corresponding JAR file in the server ?? .. plz guide me...
Thankz
K.

The Jar file would be there on the server. But you need to mention in your project that you're going to use it.
Have you mentioned it in your PortalApp.xml, under sharingreference or servicereference?
Regards,
JP

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