Most Recent Oracle 1Z0-900 Exam Dumps

Prepare for the Oracle Java EE 7 Application Developer exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

QA4Exam focus on the latest syllabus and exam objectives, our practice Q&A are designed to help you identify key topics and solidify your understanding. By focusing on the core curriculum, These Questions & Answers helps you cover all the essential topics, ensuring you're well-prepared for every section of the exam. Each question comes with a detailed explanation, offering valuable insights and helping you to learn from your mistakes. Whether you're looking to assess your progress or dive deeper into complex topics, our updated Q&A will provide the support you need to confidently approach the Oracle 1Z0-900 exam and achieve success.

The questions for 1Z0-900 were last updated on Apr 21, 2026.

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Question No. 1

A Persistence application locks entity x with a LockModeType.PESSIMISTIC_READ lock type. Which statement is true?

ALockModeType.PESSIMISTIC_READ is the synonym of LockModeType.READ

BThis operation will force serialization among transactions attempting to read the entity data.

CThis operation will result in a TransactionRolledbackException if the lock cannot be obtained.

DIf the application updates the entity later, and the changes are flushed to the database, the lock will be converted to an exclusive look.

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Correct Answer: B

Question No. 2

Given an HttpServletRequest request and an EJB SessionContext ctx.

Which is a valid way to retrieve the Principal invoking either behavior?

Arequest.getCallerPrincipal() and ctx.getCallerPrincipal()

Brequest.getUserPrincipal() and ctx.getUserPrincipal()

Crequest.getCallerPrincipal() and ctx.getUserPrincipal()

Drequest.getUserPrincipal() and ctx.getCallerPrincipal()

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Correct Answer: A

Question No. 3

Given the code fragment:

And

Which two steps, when performed independently, enable the index.xhtml page to print the following text: The Id is 12345? (Choose two.)

AReplace line 2 with: @Inject public void setAcc(Account acc)

BReplace line 3 with: @Inject public Account getAcc()

CReplace line 1 with: @Inject private Account acc;

DReplace line 3 with: public @Inject Account getAcc()

EReplace line 1 with: private @Inject Account acc;

FReplace line 2 with: public void setAcc(@Inject Account acc)

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Correct Answer: D, F

Question No. 4

Your web application requires logic to remember items that a user placed into a shopping cart.

Which two mechanisms should you use to associate that information with the user? (Choose two.)

AHttpServletResponse objects

BServletContext objects

CHttpSession objects

Da database

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Correct Answer: B, C

Question No. 5

Give the code fragment:

And the code fragment:

The sendConfirmation() and reserve() methods should be executed in the same transactional context.

Which transaction attributes do you ensure this?

AAdd annotations:@TransactionAttribute (TransactionAttributeType.REQUIRES_NEW) at line 2,@Transactional at line 9 and@TransactionAttribute ((TransactionAttributeType.MANDATORY) at line 12

BNo additional annotations are required.

CAdd annotations:@TransactionAttribute (TransactionAttributeType.REQUIRED) at line 2,@Transactional at line 9 and@TransactionAttribute ((TransactionAttributeType.REQUIRES_NEW) at line 12

DAdd annotations:@TransactionAttribute (TransactionAttributeType.MANDATORY) at line 2,@Transactional at line 9 and@TransactionAttribute ((TransactionAttributeType.REQUIRES_NEW) at line 12

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Correct Answer: D

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