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: Apr 09, 2021

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Question 1

Which three initialization statements are correct? (Choose three.)

A : t x = 12_34;

B : ort sh = (short)'A';

C : ring contact# = ''(+2) (999) (232)'';

D : olean true = (4 == 4);

E : oat x = 1.99;

F : t[][] e = {{1,1},{2,2}};

G : te b = 10;char c = b;

Answer: A,B

Question 2

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 3

Given the code fragment:

What change on line 1 will make this code compile?

A : catch (L |N e).

B : catch (L |M N e).

C : catch (L e).

D : catch (N | L | M e).

E : catch (M |L e).

Answer: 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:

and:

Which code, when inserted on line 10, prints the number of unique localities from the roster list?

A : .map(Employee::getLocality).distinct().count();

B : map(e > e.getLocality()).count();

C : .map(e > e.getLocality()).collect(Collectors.toSet()).count();

D : .filter(Employee::getLocality).distinct().count();

Answer: D

Page: 1 / 103

Total 515 Questions | Updated On: Apr 09, 2021

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