Problem with 10.13 web services tutorial

I have just tried to complete the following oracle tutorial Developing, Deploying and Managing Web Services Using JDeveloper and Oracle Application Server that is available here http://www.oracle.com/technology/obe/obe1013jdev/ws/wsandascontrol.htm.
I have successfully completed the first 10 steps without any problems and the class compiles, but when I reach step 5 of the second section entitled Creating a Web Service on the Java Class I can not progress any further.
Step 5 states:
On the methods page of the wizard, select the check boxes next to both methods from teh available methods and click finish.I can not do this because both of the check boxes are greyed out and not active. The only thing I can select is the why not? button. Upon pressing this I get the following message The class datapackage.GetDates contains compilation errors which means the validity of the methods could not be determined .
I can not understand why I am getting this message as I have followed the tutorial through up until this point exactly.
I am using JDeveloper 10.1.3.0.4 (SU4) Build JDEVADF_10.1.3_NT_060125.0900.3673
A colleague of mine has also tried to complete the tutorial and is having the same problem as me.
I'd appreciate your thoughts and suggestions in fixing this problem.
Thanks in advance
David

Hi Sunil,
I am not experiencing any compilation errors - that is why I am confused.
the class compiles without any problems as per the instructions
Compiling...
C:\JDev1013\jdk\jre\bin\java.exe -jar C:\JDev1013\jdev\lib\ojc.jar -noquiet -warn -nowarn:320 -nowarn:486 -nowarn:487 -deprecation:self -nowarn:560 -nowarn:704 -nowarn:489 -nowarn:415 -nowarn:909 -nowarn:412 -nowarn:414 -nowarn:561 -nowarn:376 -nowarn:371 -nowarn:558 -nowarn:375 -nowarn:413 -nowarn:377 -nowarn:372 -nowarn:557 -nowarn:556 -nowarn:559 -source 1.5 -target 1.5 -encoding Cp1252 -g -d C:\dev\java\1013\JavaWebService\GetDates\classes -make C:\dev\java\1013\JavaWebService\GetDates\classes\GetDates.cdi -classpath C:\JDev1013\jdk\jre\lib\rt.jar;C:\JDev1013\jdk\jre\lib\i18n.jar;C:\JDev1013\jdk\jre\lib\sunrsasign.jar;C:\JDev1013\jdk\jre\lib\jsse.jar;C:\JDev1013\jdk\jre\lib\jce.jar;C:\JDev1013\jdk\jre\lib\charsets.jar;C:\JDev1013\jdk\jre\classes;C:\dev\java\1013\JavaWebService\GetDates\classes -sourcepath C:\dev\java\1013\JavaWebService\GetDates\src;C:\JDev1013\jdk\src.zip C:\dev\java\1013\JavaWebService\GetDates\src\datespackage\GetDates.java
[13:00:49] Successful compilation: 0 errors, 0 warnings.The problem I am getting is that tick boxes which the instructions state to tick in step 5 of the second section entitled creating a web service on the java class are greyed out and not active.
Any ideas???
Thanks
David

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