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2022 Correct Practice Tests of 1z1-819 Dumps with Practice Exam [Q18-Q33]

1z1-819 Oracle

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September 13, 2022

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2022 Correct Practice Tests of 1z1-819 Dumps with Practice Exam

Certification Sample Questions of 1z1-819 Dumps With 100% Exam Passing Guarantee

Average Salary of Java SE 11 Developer Exam Number: 1Z0-819 Certified Professionals

The average salary is between $71k and $103k.

NEW QUESTION 18
Given:

Which one is correct?

An IllegalThreadStateException is thrown at run time.

Three threads are created.

The compilation fails.

Four threads are created.

NEW QUESTION 19
Given:

and

What is the result?
Joe

null
null

Mary
Joe

Marry
null

null

NEW QUESTION 20
Given:

What is the result?

compilation error

0 5

6 13

5 12

NEW QUESTION 21
Given:

Which statement on line 1 enables this code to compile?

Function<Integer, Integer> f = n > n * 2;

Function<Integer> f = n > n * 2;

Function<int> f = n > n * 2;

Function<int, int> f = n > n * 2;

Function f = n > n * 2;

NEW QUESTION 22
Given:

Which statement is true about the Fox class?

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

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

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

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

Fox class must provide implementation for the inhabit method.

NEW QUESTION 23
Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

public String toString() { return String.valueOf(ALPHA.v); }

public String toString() { return String.valueOf(Letter.values()[1]); }

public String toString() { return String.valueOf(v); }

String toString() { return “200”; }

NEW QUESTION 24
Given this requirement:
Module vehicle depends on module part and makes its com.vehicle package available for all other modules.
Which module-info.java declaration meets the requirement?

Option A

Option B

Option C

Option D

NEW QUESTION 25
Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

protected void walk(){}

void walk(){}

abstract void walk();

private void walk(){}

public abstract void walk();

NEW QUESTION 26
Given:

Which statement is equivalent to line 1?

double totalSalary = list.stream().map(e > e.getSalary() * ratio).reduce (bo).ifPresent (p > p.doubleValue());

double totalSalary = list.stream().mapToDouble(e > e.getSalary() * ratio).sum;

double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);

double totalSalary = list.stream().mapToDouble(e > e.getSalary() * ratio).reduce(starts, bo);

NEW QUESTION 27
Given:

and

What is the result?

A NullPointerException is thrown at run time.

The compilation fails.

1
Null
null

1
1
1

A ClassCastException is thrown at run time.

NEW QUESTION 28
Which interface in the java.util.function package will return a void return type?

Supplier

Predicate

Function

Consumer

NEW QUESTION 29
Given:

What is the result?

[0,0] = Red[0,1] = White[1,0] = Black[1,1] = Blue[2,0] = Yellow[2,1] = Green[3,0] = Violet

[0,0] = Red[1,0] = Black[2,0] = Blue

java.lang.ArrayIndexOutOfBoundsException thrown

[0,0] = Red[0,1] = White[1,0] = Black[2,0] = Blue[2,1] = Yellow[2,2] = Green[2,3] = Violet

NEW QUESTION 30
Given the code fragment:

What is the result?

false true true

true false false

false false true

false true false

NEW QUESTION 31
Given:

What is the result?

NullPointerException is thrown at line 4.

NullPointerException is thrown at line 10.

A compilation error occurs.

Hello

NEW QUESTION 32
Given a Memberclass with fields for nameand yearsMembership, including getters and setters and a print method, and a list of clubMembersmembers:

Which two Stream methods can be changed to use method references? (Choose two.)

filter(Integer::equals(0))

map(testName::compareToIgnoreCase)

filter(Member::getYearsMembership() >= testMembershipLength)

peek(Member::print)

NEW QUESTION 33
Given:

What is the output?

Hello world!Bonjour le monde!

Hello world!Hello world!

Bonjour le monde!Hello world!

Bonjour le monde!Bonjour le monde!

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How to book the Java SE 11 Developer Exam Number: 1Z0-819

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