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: Oct 25, 2026

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Question 1

Given:

What is the expected result of javac?

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

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

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

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

Answer: B

Question 2

Which two modules include APIs in the Java SE Specification? (Choose two.)

A : java.logging

B : java.desktop

C : javafx

D : jdk.httpserver

E : jdk.jartool

Answer: A,D

Question 3

Examine these module declarations:

Which two statements are correct? (Choose two.)

A : The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.

B : The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.

C : The Consumer module should require the ServiceProvider module.

D : The ServiceProvider module should export the com.myimpl package.

E : The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the com.example.api API.

Answer: A,C

Question 4

Given:

Which statement on line 1 enables this code fragment to compile?

A : Function function = String::toUpperCase;

B : UnaryOperator function = s > s.toUpperCase();

C : UnaryOperator function = String::toUpperCase;

D : Function function = m > m.toUpperCase();

Answer: C

Question 5

Given the code fragment:

What is the result?

A : [Lettuce, Kale]

B : A compilation error is thrown.

C : [Lettuce, Kale] [Seabass, Salmon]

D : [Kale, Lettuce] [Salmon, Seabass]

Answer: B

Page: 1 / 103

Total 515 Questions | Updated On: Oct 25, 2026

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