Wiley 978-0-7645-3966-4 Datasheet

UnderstandingJava and theJ2EE PlatformJava 2 Enterprise Edition, or J2EE, is a package of specifi-cations aligned to enable the development of multi-t

12Part I ✦ Introduction✦ Security Services — These are provided via Java Authentication andAuthorization Service (JAAS) 1.0, which allows J2EE servers

13Chapter 1 ✦ Understanding Java and the J2EE PlatformStandard Service Version App Client Web EJBSAAJ 1.2 Required Required RequiredJAXR 1.0 Required

14Part I ✦ IntroductionJ2EE 1.4 has dramatically changed that with the introduction of XML-RPC, JAXR,SAAJ, and modifications within the Enterprise Jav

15Chapter 1 ✦ Understanding Java and the J2EE PlatformThe JCP Web site lists over 500 members working on 90 outstanding JSRs as of thestart of 2003. I

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4Part I ✦ IntroductionJava brought the concept of a virtual machine into the mainstream. Traditionally,programs written in a particular language, such

5Chapter 1 ✦ Understanding Java and the J2EE PlatformUnderstanding J2SEAround 1998, Sun updated the Java specification and introduced Java 1.2 along w

6Part I ✦ IntroductionFigure 1-2: J2EE Architecture (source: Javasoft)Application componentsFour application components are defined within the J2EE pl

7Chapter 1 ✦ Understanding Java and the J2EE PlatformAppletsApplets are similar to application clients, but execute within a Web browser. Initiallyapp

8Part I ✦ IntroductionThe application component providerAn application component provider is a developer who creates a component that isintended to re

9Chapter 1 ✦ Understanding Java and the J2EE PlatformIn addition to specifying the lifecycle roles, the J2EE also recommends the usage ofthe model-vie

10Part I ✦ Introductiona table named Bookings with the fields PassengerName, DepartureCity,DestinationCity, TravelDate, and DepartureTime. This data m

11Chapter 1 ✦ Understanding Java and the J2EE PlatformThe J2EE specifies a set of standard services, which are listed in the next sectionwith an accom