Java EE 8 Cookbook

How to do it...

1. Let's create a list of roles for our application:

public class Roles {    public static final String ADMIN = "admin";    public static final String USER = "user";}

2. Then we create a list of tasks that could be performed by only one of the roles, one task that everyone can do, and another task that no one can do:

@Statefulpublic class UserBean {        @RolesAllowed({Roles.ADMIN})    public void adminOperation(){        System.out.println("adminOperation executed");    }        @RolesAllowed({Roles.USER})    public void userOperation(){        System.out.println("userOperation executed");    }    @PermitAll    public void everyoneCanDo(){        System.out.println("everyoneCanDo executed");    }    @DenyAll    public void noneCanDo(){        System.out.println("noneCanDo executed");    }     }

3. Now ...