Free Oracle 1Z0-819 Exam Questions

Become Oracle Certified with updated 1Z0-819 exam questions and correct answers

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Total 515 Questions | Updated On: Mar 27, 2025

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Question 1

Given:

Assuming that this code compiles correctly, which three statements are true? (Choose three.)

A : cannot be abstract.

B : B is a subtype of A.

C : cannot be abstract.

D : cannot be final.

E : cannot be final.

F : is a subtype of B.

Answer: A,B,D

Question 2

Given:

Which action must you perform to print Verified?

A : Make the verify method public and invoke it from the main method.

B : Invoke the verify method from the place method.

C : Change the declaration of the order variable to orderService order = New order(); and Invoke the verify method from the main method.

D : Invoke the verify method from the main method.

Answer: B

Question 3

Which two statements are true about Java modules? (Choose two.)

A : dular jars loaded from --module-path are automatic modules.

B : y named module can directly access all classes in an automatic module.

C : asses found in --classpath are part of an unnamed module.

D : dular jars loaded from --classpath are automatic modules.

E : a package is defined in both the named module and the unnamed module, then the package in the unnamed module is ignored.

Answer: A,C

Question 4

You replace the code on line 1 to use ParallelStream.

Which one is correct?

A : code will produce the same result.

B : compilation fails.

C : NoSuchElementException is thrown at run time.

D : code may produce a different result.

Answer: D

Question 5

Given:

2021-04-27-22-23-17-3d4ddcb379cef75d65c8f83ed91c42db

What is the expected result of javac?

A : vac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist

B : vac compiles Mycar.java without errors or warnings.

C : vac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang

D : vac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class

Answer: B

Page: 1 / 103

Total 515 Questions | Updated On: Mar 27, 2025

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