Free Practice Oracle 1Z0-819 Exam Questions 2025

Stay ahead with 100% Free Java SE 11 Developer 1Z0-819 Dumps Practice Questions

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Total 515 Questions | Updated On: Apr 09, 2021

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Question 1

Which module-info.java is correct for a service provider for a print service defined in the PrintServiceAPI module?

A : module PrintServiceProvider {requires PrintServiceAPI;exports org.printservice.spi;}

B : module PrintServiceProvider {requires PrintServiceAPI;provides org.printservice.spi.Print withcom.provider.PrintService;}

C : module PrintServiceProvider {requires PrintServiceAPI;uses com.provider.PrintService;}

D : module PrintServiceProvider {requires PrintServiceAPI;exports org.printservice.spi.Print withD18912E1457D5D1DDCBD40AB3BF70D5Dcom.provider.PrintService;}

Answer: A

Question 2

Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the

values array is partially sorted?

A : after line 8

B : after line 6

C : after line 5

D : after line 10

Answer: B

Question 3

Given:

It is required that if p instanceof Pair then p.isValid() returns true. Which is the smallest set of visibility changes to insure this requirement is met?

A : setLeft and setRight must be protected.

B : left and right must be private.

C : isValid must be public.

D : left, right, setLeft, and setRight must be private.

Answer: B

Question 4

What is the result?

A : 9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt

B : 9001: APPLICATION ERROR-9001-MyFile.txt 9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt

C : 9001: APPLICATION ERROR-9001-MyFile.txt

D : Compilations fails at Line 1.

Answer: D

Question 5

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

Page: 1 / 103

Total 515 Questions | Updated On: Apr 09, 2021

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