Access to permission helper classes eg BlogsPermission

[10年前 に Alain Dresse によって更新されました。]

The Liferay developer documentation recommends writing and user permission helper classes such as BlogsPermission.

When I try to use it in a portlet class, I get a 'java.lang.ClassNotFoundException. Hence the question: how can I user permission helpers in a custom portlet ?

Thanks,
Alain

PS: this question was also posted on stackoverflow :