Computer Knowledge

Java Enterprise and Web Technologies

2,279 Questions

Java enterprise and web technologies questions focus on J2EE architecture, web services like SOAP, and servlet functionalities. These topics frequently appear in IT officer and specialist scale examinations. Regular practice ensures familiarity with enterprise application components.

HttpServlet methodsSOAP and web servicesEJB architecture rolesJ2EE componentsJSP servlet callingUDDI concepts

Java Enterprise and Web Technologies Questions

Multiple choice

Which of the following's tools are used to generate code that moves data between the enterprise bean's instance variables and a database or an existing application?

  1. EJB server provider

  2. Deployment descriptor

  3. EJB container provider

  4. Instance passivation

  5. TX_BEAN_MANAGED
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

EJB container provider's tools are used to generate code that moves data between the enterprise bean's instance variables and a database or an existing application.

Multiple choice

Which of the following is responsible for mapping the security roles defined by the application assembler to the user groups and accounts that exist in the operational environment in which the enterprise beans are deployed?

  1. Deployment descriptor

  2. EJB server provider

  3. Instance passivation

  4. TX_MANDATORY

  5. Deployer
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

It is responsible for mapping the security roles defined by the application assembler to the user groups and accounts that exist in the operational environment in which the enterprise beans are deployed.

Multiple choice

JOHN is writing a Forms application, and he plans to include several JavaBeans. What should he do to facilitate the communication between Forms and the JavaBeans?

  1. Write Java wrapper classes to integrate the JavaBean into Forms.

  2. Use the FBEAN PL/SQL Package and its built-ins to register and invoke the JavaBeans.

  3. Add a special layer of Java code to register the properties and methods of the JavaBeans.

  4. He does not need to use any built-in package or write any code to integrate JavaBeans into forms.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The FBEAN package is Oracle Forms' built-in interface for communicating with JavaBeans. It provides PL/SQL built-ins to register JavaBeans, set/get properties, and invoke methods. Using FBEAN eliminates the need to write custom Java wrapper code or implement custom integration layers - it's the standard, supported mechanism for Forms-JavaBean interaction.