Thomas Hauck

The previous link posted on August 16, 2015

http://www.j2eeonline.com/java2-programmers-certification/module7/synchronized-shared-objects.jsp

has changed to


Synchronized Shared Objects

There are  four types of Static Nested Classes:

1) an outer class has a static nested class
2) an outer interface has a static nested class
3) an outer class has a static nested interface
4) an outer interface has a static nested interface


More on this subject can be found at
Static Nested Classes

A foreign key consists of a column that references another column in another table. This column that is being referred is most often a primary key of the referenced table.
The purpose of the foreign key is to ensure referential integrity of the data.
More on this topic can be found on the following web page.

Foreign Key

The following web page

well-formed XML

contains a series of images demonstrating the concept of a
well-formed xml document.

I would recommend writing your new application using JSPs and Servlets provided that your application server has enough memory.
The following website contains a good tutorial on Java Servlets.
JSP and Servlets

The URL previsouly mentioned

client-stub-proxy-pattern

has been changed to

Client Stub Proxy Pattern

The following page contains a series of images describing the EJB Proxy pattern.
EJB Proxy Pattern

Thomas Hauck wrote:

Thomas Hauck wrote:The following page discusses the topic of
JavaBeans Manifest File in Detail.


The link to the JavaBeans Manifest File has been updated to

https://www.j2eeonline.com/java-beans/module3/javabeans-manifest-file.jsp

The following page discusses the concept of a foreign key.

Define Foreign Key

The following page discusses the concept of an inner join.

SQL Inner Join

The following page
checked and unchecked
exceptions,
contains a list of checked and unchecked exceptions.

The following page contains several diagrams along with an explanation for the
Mediator Pattern.

The following page discusses the difference between
Stateful and Stateless Session Beans

The following page discusses the topic of
JavaBeans Manifest File in Detail.

JavaBeans Manifest File

The following page contains several examples of
the Singleton Design Pattern used in the real world.

Singleton Design Pattern

The following page discusses
composite primary keys
http://www.relationaldbdesign.com/relational-database-analysis/module2/composite-primary-keys.php
within the context of relational database design.