GIAC GSSP-Java Questions Answers

DriverManager

ResultSet

Connection

Statement

Singletons are used to control object creation by limiting the number to one but allowing the flexibility to create more objects if the situation changes.

Singletons can only be stateless, providing utility functions that need no more information than their parameters.

A singleton class may disappear if no object holds a reference to the Singleton object, and it will be reloaded later when the singleton is needed again.

The behavior of a singleton can be obtained by static fields and methods such as

java.lang.Math.sin(double).

It provides password protection for a Web page or directory

It can be accessed by more visitors.

It provides faster loading.

It is easier to update and maintain the site.

It protects the source or images of a HTML Web page.

It puts less load on the server.

HttpSessionListener

HttpSessionActivationListener

HttpSessionAttributeListener

HttpSessionBindingListener