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Total 88 questions
Exam Code: 1z0-819                Update: Oct 14, 2025
Exam Name: Java SE 11 Developer
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Oracle Java SE 11 Developer 1z0-819 Exam Dumps: Updated Questions & Answers (October 2025)

Question # 1

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”?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Question # 2

Consider this method declaration:

A) “SET SESSION AUTHORIZATION “ + user

B) “SET SESSION AUTHORIZATION “ + stmt.enquoteIdentifier(user)

Is A or B the correct replacement for and why?

A.

A, because it sends exactly the value of user provided by the calling code.

B.

B, because enquoting values provided by the calling code prevents SQL injection.

C.

A and B are functionally equivalent.

D.

A, because it is unnecessary to enclose identifiers in quotes.

E.

B, because all values provided by the calling code should be enquoted.

Question # 3

Given:

What is the result?

A.

Take extra care

B.

The program prints nothing.

C.

Take extra care

Take extra care

D.

An exception is thrown at runtime

Question # 4

And the code fragment:

Which situation will occur on code fragment execution?

A.

Livelock

B.

Deadlock

C.

Race Condition

D.

Starvation

Question # 5

Which line of code results in a compilation error?

A.

line n1

B.

line n3

C.

line n2

D.

line n4

Question # 6

Given:

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

A)

B)

C)

A.

Option A

B.

Option B

C.

Option C

Question # 7

Given:

Which three are true? (Choose three.)

A.

b1.foo(c) prints Bonjour le monde!

B.

f1.foo(c) prints Hello world!

C.

f1.foo(c) prints Olá Mundo!

D.

b1.foo(c) prints Hello world!

E.

f2.foo(c) prints Olá Mundo!

F.

b1.foo(c) prints Olá Mundo!

G.

f2.foo(c) prints Bonjour le monde!

Question # 8

Given:

You want to obtain the Stream object on reading the file. Which code inserted on line 1 will accomplish this?

A.

var lines = Files.lines(Paths.get(INPUT_FILE_NAME));

B.

Stream lines = Files.readAllLines(Paths.get(INPUT_FILE_NAME));

C.

var lines = Files.readAllLines(Paths.get(INPUT_FILE_NAME));

D.

Stream lines = Files.lines(INPUT_FILE_NAME);

Question # 9

Given:

What is the result?

A.

Ans: a

B.

The compilation fails

C.

Ans:

D.

A java:util. NsuchElementException is thrown at runtime

Question # 10

Given the code fragment:

You want to display the value of currency as $100.00.

Which code inserted on line 1 will accomplish this?

A.

NumberFormat formatter = NumberFormat.getInstance(locale).getCurrency();

B.

NumberFormat formatter = NumberFormat.getCurrency(locale);

C.

NumberFormat formatter = NumberFormat.getInstance(locale);

D.

NumberFormat formatter = NumberFormat.getCurrencyInstance(locale);

Page: 1 / 9
Total 88 questions
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