Title: Manning EJB 3.0 in Action
Author: Debu Panda
           Reza Rahman
           Derek Lane
Format: PDF
Publisher: Manning

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 mankind as a cow.
EJB too has lived through three incarnations. When it was first released, the industry was dazzled
by  its  innovations.  But  like  the  ladybug,    EJB 1  had  limited  functionality.  The  second  EJB
incarnation was just about as heavy as the largest of our beloved pachyderms. The brave souls who
could not do without its elephant-power had to tame the awesome complexity of EJB 2. And finally,
in its third incarnation, EJB has become much more useful to the huddled masses, just like the gentle
bovine that is sacred for Hindus and respected as a mother whose milk feeds us all.. 
A  lot  of  people  have  put  in  a  lot  of  hard  work  to  make  EJB  3  as  simple  and  lightweight  as
possible without sacrificing enterprise-ready power. EJB components are now little more than Plain
Old  Java  Objects  (POJOs)  that  look  a  lot  like  code  in  a  Hello  World  program.  We  hope  you  will
agree with us as you read through the next Chapters that it has all the makings of a star. 
We’ve strived to keep this book as earthy as possible without skimping on content. The book is
designed to help you learn EJB 3.0 as quickly and as easily as possible. At the same time, we will not
neglect to cover the basics where needed. We will also dive into deep waters with you where we can,
share with you all the amazing sights we’ve discovered and warn you about any lurking dangers. 
This  book  is  about  the  radical  transformation  of  a  very  important  and  uniquely  influential
technology in the Java World. We suspect you are not picking this book up to learn too much about
EJB  2.  You  probably  either  already  know  EJB  2.x  or  are  completely  new  to  the  world  of  EJB.  In
either  case,  spending  too  much  time  on  previous  versions  is  a  waste  of  your  time  --you  won't  be
surprised to learn that EJB 3.0 and EJB 2.x have very little in common. . If you are really curious
about the journey that brought us to the current point, we encourage you to pick up one of the many
good books on the previous versions of EJB.

Download the free pdf ebook: Manning EJB 3.0 in Action.pdf