Skills required for Sun test CX310-082

Skills required for Sun test CX310-082

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Sun has specified more than 20 objectives for Sun test CX310-082 (Sun Certified Web Component Developer for the Java 2 Platform, Enterprise Edition 1.4 Upgrade Exam). These objectives are grouped under 11 topics. Before taking the test, an individual should possess a good command over the following areas:

1. Describing the purpose and event sequence of the Servlet life cycle.


2. Using the HttpServletResponse interface for writing code to set an HTTP response header, setting the content type of the response, acquiring a text stream for the response, acquiring a binary stream for the response, redirecting an HTTP request to another URL, and adding cookies to the response.


3. Constructing the correct structure of the deployment descriptor.


4. Describing the Web container request processing model. Describing the use of a filter and a wrapper, and writing code to configure them.


5. Describing the Web container life cycle event model for requests, sessions, and Web applications. Creating and configuring listener classes for each scope life cycle. Creating and configuring scope attribute listener classes, and for a given scenario, identifying proper attribute listeners to use.


6. Using session listeners, writing code to respond to an event when an object is added to a session, and writing code to respond to an event when a session object migrates from one virtual machine to another.


7. Given a scenario, describing which session management mechanism the Web container could employ, how cookies might be used to manage sessions, how URL rewriting might be used to manage sessions, and writing Servlet code to perform URL rewriting.


8. Writing deployment descriptor elements to declare a security constraint, a Web resource, the transport guarantee, the login configuration, and a security role.


9. Writing code to use the following directives: page, include, and taglib.


10. Configuring the deployment descriptor for deactivating the evaluation language, and deactivating the scripting language.


11. Writing EL code that accesses the following implicit variables: pageScope, requestScope, sessionScope, and applicationScope, param, and paramValues, header and headerValues, cookie, initParam and pageContext. Writing EL code that uses the property access (the . operator) and collection access (the [] operator).


12. Writing EL code that uses the following operators: arithmetic operators, relational operators, and logical operators. Writing EL code that uses a function, and configuring the EL function in a tag library descriptor.


13. Writing code using the following standard actions: jsp:include, jsp:forward, and jsp:param.


14. Using an appropriate JSP Standard Tag Library (JSTL v1.1) tag from the core tag library.


15. Writing a tag handler code to access the parent tag and an arbitrary tag ancestor. Describing the semantics of the simple custom tag event model when the event method (doTag) is executed. Explaining the constraints on the JSP content within the tag.


16. Given a scenario, describing a list of issues, and selecting a pattern that would solve the issues. The list of patterns you must know are Intercepting Filter, Model-View-Controller, Front Controller, Service Locator, Business Delegate, and Transfer Object.


17. Matching design patterns with statements describing potential benefits that accrue from the use of the following patterns: Intercepting Filter, Model-View-Controller, Front Controller, Service Locator, Business Delegate, and Transfer Object.

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