QUESTION: 5

What is true about Message-Driven Beans (MDBs)?

MDBs can participate in transactions.
MDBs are invoked synchronously.
Each MDBs can process messages only from a single client.
MDBs retain data caches between client calls.

Answer(s): A

Reference:

https://docs.oracle.com/javaee/7/tutorial/ejb-intro003.htm

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QUESTION: 6

You have been asked to implement internationalization in your JSF web application. Where do you configure the supported locales?

in the <f:view> tag of the Facelet page
in the web.xml file
in the faces-config.xml file
in the src folder

Answer(s): A

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Given the code fragment:

Which code can be added to register both of these methods to receive BankEvent notifications only if an instance of BankActivityService is already instantiated in the current context?

@Observes(notifyObserver=IF_EXISTS) on line 3 and line 6
@Observes(during=IN_PROGRESS) on line 1
@Observes(during=AFTER_COMPLETION) on line 1
@Observes(notifyObserver=IF_EXISTS) on line 4 and line 7 before method parameter declaration

Answer(s): A

Reference:

https://docs.oracle.com/javaee/7/tutorial/cdi-adv005.htm

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QUESTION: 8

Which code snippet prints the exception error message as part of the page output?

<%= exception.message %>
<c:out value=”${requestScope[‘javax.servlet.error.exception’]}”/>
<% exception.getMessage(); %>
<% System.out.println(e.getMessage()) %>

Answer(s): D

Reference:

https://www.geeksforgeeks.org/3-different-ways-print-exception-messages-java/

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Free Oracle 1z0-900 Exam Questions (page: 3)

QUESTION: 5

Reference:

QUESTION: 6

QUESTION: 7

Reference:

QUESTION: 8

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