Java in a Nutshell, 5th Edition [Electronic resources]

This subclass of Provider defines methods that allow users to "log in" before using the provider's services. An implementation of the login( ) method should use the supplied javax.security.auth.callback.CallbackHandler class to request the user's password or other authentication credentials. If no callback handler is passed to login( ), it should use the one registered with setCallbackHandler( ) or a default.

public abstract class 
AuthProvider  extends Provider {
// Protected Constructors
protected 
AuthProvider (String 
name , double 
version , String 
info );  
// Public Instance Methods
public abstract void 
login (javax.security.auth.Subject 
subject , javax.
security.auth.callback.CallbackHandler 
handler ) 
throws javax.security.auth.login.LoginException;  
public abstract void 
logout ( ) throws javax.security.auth.login.LoginException;  
public abstract void 
setCallbackHandler (javax.security.auth.callback.
CallbackHandler 
handler );  
}