Error executing Webdynpro mail program

Hi,

I am using webdynpro code for implementing mail service.

I have imported jaxrpc.jar as external jar file.

I got this jar from axis.zip.

While implementing the code, I get following exception.

java.lang.Error: Unresolved compilation problems:

Class must implement the inherited abstract method Service.getWSDLDocumentLocation()

Class must implement the inherited abstract method Service.getPorts()

Class must implement the inherited abstract method IEmailServiceservice.getLogicalPortNames()

Class must implement the inherited abstract method Service.getPort(Class)

Class must implement the inherited abstract method Service.getTypeMappingRegistry()

Class must implement the inherited abstract method Service.getCalls(QName)

Class must implement the inherited abstract method Service.getPort(QName, Class)

Class must implement the inherited abstract method Service.createCall(QName, QName)

Class must implement the inherited abstract method Service.createCall(QName, String)

Class must implement the inherited abstract method Service.createCall()

Class must implement the inherited abstract method Service.getServiceName()

Class must implement the inherited abstract method Service.getHandlerRegistry()

Class must implement the inherited abstract method Service.createCall(QName)

com.sap.engine cannot be resolved or is not a valid superclass

The method loadProtocolsFromPropertyFile(InputStream) is undefined for the type IEmailServiceserviceImpl

The method init(InputStream) is undefined for the type IEmailServiceserviceImpl

The method getPort(QName, Class) is undefined for the type Object

The method getPort(QName, Class) is undefined for the type Object

The method getLogicalPort(Class) is undefined for the type Object

Whats wrong?

thanks,

Ashutosh