Sun Certified Enterprise Architecture for J2EE Technology - download pdf or read online
By Mark Cade, Simon Roberts
ISBN-10: 0130449164
ISBN-13: 9780130449160
This is often the 1st authoritative, approved examine advisor for Sun's hard new solar qualified company Architect for Java 2 Platform, firm variation expertise tests. Written by way of the exam's lead developer and assessor, it deals start-to-finish counsel and heritage for designing powerful J2EE architectures -- and accomplished training for all 3 examination parts you must cross: Sun's multiple-choice examination, architecture/design undertaking, and essay examination. sunlight Microsystems Senior Java Architect Mark Cade starts off with an summary of procedure structure and its ambitions -- together with constitution, habit, utilization, performance, functionality, resilience, reuse, and comprehensibility. Cade indicates the best way to rfile J2EE architectures via visible types and narratives -- growing procedure specifications and method structure records that act as blueprints for the complete improvement procedure. He introduces every one of Sun's strongest and worthwhile J2EE structure styles; walks you thru key protection and internationalization matters, offers an entire bankruptcy on HTTP and different protocols for allotted platforms improvement; and concludes with a start-to-finish case examine. From legacy connectivity to messaging, firewall matters to servlets, the booklet covers each examination goal -- and each ability wanted by way of J2EE company architects.
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Extra resources for Sun Certified Enterprise Architecture for J2EE Technology Study Guide
Sample text
A package diagram is a special kind of class diagram that organizes the system into groups. An interaction diagram shows an interaction, consisting of a set of objects and their relationships. Statechart diagram describes the dynamic view of a system. An activity diagram is a statechart diagram that shows the flow from activity to activity within the system. A component diagram shows the organizations and dependencies among a set of components. A deployment diagram shows the configuration of run-time processing nodes and the components on these nodes.
If you are implementing an entity bean, which class is not required? A. B. C. D. EJBHome The correct answer is C. EJBRemote class Objective: Distinguish between session and entity beans 5. Which statement is true about session beans, but is NOT true about entity beans? A. B. C. D. A: The bean is used as the model in an MVC design pattern. State is persistent and can represent a row in a database table. The bean can use a data access object to facilitate migration to CMP. State represents a conversational state for a specific client.
Figure 4-5. The Singleton Pattern BENEFITS The following lists the benefits of using the Singleton pattern: • • • • • Controlled access to sole instance Reduced name space Permits refinement of operations and representation Permits a variable number of instances More flexible than class operations WHEN TO USE You should use the Singleton pattern when: • There must be exactly one instance of a class. 2 Structural Patterns Structural patterns control the relationships between large portions of your applications.
Sun Certified Enterprise Architecture for J2EE Technology Study Guide by Mark Cade, Simon Roberts
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