Which of the following methods determines the principle name of the current user and returns the jav a.security.Principal object in the HttpServletRequest interface? 

Answer options:

A. getUserPrincipal()
B. isUserInRole()
C. getRemoteUser()
D. getCallerPrincipal()

java.security.Principal object contains the remote user name. The value of the getUserPrincipal() method returns null if no user is authenticated. Answer: C is

The getUserPrincipal() method determines the principle name of the current user and returns the java.security.Principal object. The incorrect. The getRemoteUser() method returns the user name that is used for the client authentication. The value of the getRemoteUser() method returns null if method is used to identify a caller using a java.security.Principal object. It is not used in the HttpServletRequest interface.