can you list some Local service Implemenations for which you can overrider or customize in hooks?

Liferay has interfaces for all its Local service implementations


Interfaces

public interface UserLocalService { }

public interface OrganizationLocalService { }

public interface ThemeLocalService { }


Interface Implementations


UserLocalServiceImpl

OrganizationLocalServiceImpl

UserGroupLocalServiceImpl

GroupLocalServiceImpl

BlogsEntryLocalServiceImpl

AccountLocalServiceImpl

AddressLocalServiceImpl

CompanyLocalServiceImpl

GroupLocalServiceImpl

PortalLocalServiceImpl

ThemeLocalServiceImpl

Each Local Service


When we want to customize any Service Implementation in hook, generally we don't directly extend the LocalServiceImpl clases. we use Wrapper classes

UserLocalServiceWrapper
OrganizationLocalServiceWrapper

ThemeLocalServiceWrapper


In order to user these Local service implementation in our code we always use Util classes

UserLocalServiceUtil
ThemeLocalServiceUtil
GroupLocalServiceUtil
CompanyLocalServiceUtil