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1Z0-819 Exam Questions

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Question 1

Which code fragment does a service use to load the service provider with a Print interface?

Aprivate Print print = com.service.Provider.getInstance();

Bprivate java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);

Cprivate java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

Dprivate Print print = new com.service.Provider.PrintImpl();

Correct : B

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Aprivate Print print = com.service.Provider.getInstance();

Bprivate java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);

Cprivate java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

Dprivate Print print = new com.service.Provider.PrintImpl();

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Question 2

Given:

Which statement is true about the Fox class?

AFox class does not have to override inhabit method, so long as it does not try to call it.

BFox class does not have to override the inhabit method if Forest and Town provide compatible implementations.

CFox class must implement either Forest or Town interfaces, but not both.

DThe inhabit method implementation from the first interface that Fox implements will take precedence.

EFox class must provide implementation for the inhabit method.

Correct : B

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AFox class does not have to override inhabit method, so long as it does not try to call it.

BFox class does not have to override the inhabit method if Forest and Town provide compatible implementations.

CFox class must implement either Forest or Town interfaces, but not both.

DThe inhabit method implementation from the first interface that Fox implements will take precedence.

EFox class must provide implementation for the inhabit method.

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Question 3

Given:

You want to examine the items list it contains an item for which the variable count is below zero.

Which code fragment at line 1 accomplish this?

AIf (items.stream () .filter (i -> count < 0) . findFirst () ) {

BIf (items.stream () .filter (i -> count < 0) . findAny () ) {

CIf (items.stream () .allmatch (i -> count < 0) < 0) ) {

DIf (items.stream () .anymatch (i -> count < 0) < 0) ) {

Correct : A

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AIf (items.stream () .filter (i -> count < 0) . findFirst () ) {

BIf (items.stream () .filter (i -> count < 0) . findAny () ) {

CIf (items.stream () .allmatch (i -> count < 0) < 0) ) {

DIf (items.stream () .anymatch (i -> count < 0) < 0) ) {

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Question 4

Given:

What is the correct definition of the JsonField annotation that makes the Point class compile?

AOption A

BOption B

COption C

Correct : A

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AOption A

BOption B

COption C

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Question 5

Given:

List longlist = List.of(''Hello'',''World'',''Beat'');

List shortlist = new ArrayList<>();

Which code fragment correctly forms a short list of words containing the letter ''e''?

AOption A

BOption B

COption C

DOption D

Correct : D

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AOption A

BOption B

COption C

DOption D

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Total 296 questions

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Exam Name: Java SE 11 Developer
Exam Code: 1Z0-819
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