Chapter 1. What’s what in EJB 3

 

This chapter covers

  • EJB as component and framework
  • Types of EJBs
  • EJB containers and persistence provider
  • Reasons for choosing EJB 3

One day, when God was looking over his creatures, he noticed a boy named Sadhu whose humor and cleverness pleased him. God felt generous that day and granted Sadhu three wishes. Sadhu asked for three reincarnations—one as a ladybug, one as an elephant, and the last as a cow. Surprised by these wishes, God asked Sadhu to explain himself. The boy replied, “I want to be a ladybug so that everyone in the world will admire me for my beauty and forgive the fact that I do no work. Being an elephant will be fun because I can gobble down enormous amounts of food without being ridiculed. I will like being a cow the best because I will be loved by all and useful to mankind.” God was charmed by these answers and allowed Sadhu to live through the three incarnations. He then made Sadhu a morning star for his service to humankind as a cow.

1.1. EJB overview

1.2. Understanding EJB types

1.3. Getting inside EJB

1.4. Renaissance of EJB

1.5. Summary