Hi,
I am working with liferay portal 6.1.1 and Service builder.
I create service.xml and after click on build services I get this message

Buildfile: C:\Documents and Settings\Administrator\Desktop\liferay-plugins-sdk-6.0.2\portlets\Inkwell-portlet\build.xml
build-service:
Created dir: C:\Documents and Settings\Administrator\Desktop\liferay-plugins-sdk-6.0.2\portlets\Inkwell-portlet\docroot\WEB-INF\service
Created dir: C:\Documents and Settings\Administrator\Desktop\liferay-plugins-sdk-6.0.2\portlets\Inkwell-portlet\docroot\WEB-INF\sql
Loading jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/system.properties
Mar 05, 2013 8:35:02 AM com.liferay.portal.kernel.log.Jdk14LogImpl info
INFO: Global shared lib directory /C:/Documents and Settings/Administrator/Desktop/liferay-plugins-sdk-6.0.2/lib/
Mar 05, 2013 8:35:02 AM com.liferay.portal.kernel.log.Jdk14LogImpl info
INFO: Global lib directory /C:/Documents and Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/lib/ext/
Mar 05, 2013 8:35:02 AM com.liferay.portal.kernel.log.Jdk14LogImpl info
INFO: Portal lib directory /C:/Documents and Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/
Mar 05, 2013 8:35:04 AM com.liferay.portal.kernel.log.Jdk14LogImpl info
INFO: Properties for portal loaded from [jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/com/liferay/portal/tools/dependencies/portal-tools.properties, jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal.properties]
Loading jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/portal.properties
Loading jar:file:/C:/Documents%20and%20Settings/Administrator/Desktop/liferay-portal-6.1.1-ce-ga2/tomcat-7.0.27/webapps/ROOT/WEB-INF/lib/portal-impl.jar!/com/liferay/portal/tools/dependencies/portal-tools.properties
Building PRProduct
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\service\persistence\PRProductPersistenceImpl.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\persistence\PRProductPersistence.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\persistence\PRProductUtil.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\model\impl\PRProductModelImpl.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\model\impl\PRProductBaseImpl.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\model\impl\PRProductImpl.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\model\PRProductModel.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\model\PRProduct.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\model\impl\PRProductCacheModel.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\model\PRProductClp.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\model\PRProductWrapper.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\model\PRProductSoap.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\service\impl\PRProductLocalServiceImpl.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\service\base\PRProductLocalServiceBaseImpl.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\PRProductLocalService.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\PRProductLocalServiceUtil.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\PRProductLocalServiceClp.java
Writing docroot\WEB-INF\src\com\inkwell\internet\productregistration\service\base\PRProductLocalServiceClpInvoker.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\PRProductLocalServiceWrapper.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\messaging\ClpMessageListener.java
Writing docroot\WEB-INF\service\com\inkwell\internet\productregistration\service\ClpSerializer.java
Created dir: C:\Documents and Settings\Administrator\Desktop\liferay-plugins-sdk-6.0.2\portlets\Inkwell-portlet\docroot\WEB-INF\service-classes
compile-java:
Compiling 14 source files to C:\Documents and Settings\Administrator\Desktop\liferay-plugins-sdk-6.0.2\portlets\Inkwell-portlet\docroot\WEB-INF\service-classes

the process continue running and not building the file.
no error no exception.
I am not getting how to proceed further.
Please help me.

I solved it myself.
Liferay was not properly configured. So I reconfigure it in eclipse and now it works.

It's also not a good idea to use out dated plugins sdk.

If you're using liferay 6.1.1, you should be using liferay plugins sdk 6.1.1 and not 6.0.2

Thanks Hitoshi
As I am new to liferay so I don't know about this.
But anyways I'll update it.
Thanks :-)