[Jan 12, 2025] 100% Real & Accurate 1z1-819 Questions with Free and Fast Updates [Q81-Q98]

QUESTION 81
Given:

Examine these requirements:
Eliminate code duplication.
Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?

Option A

Option B

Option C

Option D

QUESTION 82
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) – 1));

m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) – 1));

m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) – 1;

m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) – 1);

QUESTION 83
var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)

double avg = numbers.stream().parallel().averagingDouble(a -> a);

double avg = numbers.parallelStream().mapToInt (m -> m).average().getAsDouble ();

double avg = numbers.stream().mapToInt (i -> i).average().parallel();

double avg = numbers.stream().average().getAsDouble();

double avg = numbers.stream().collect(Collectors.averagingDouble(n -> n));

QUESTION 84
You replace the code on line 1 to use ParallelStream.

Which one is correct?

The code will produce the same result.

The compilation fails.

A NoSuchElementException is thrown at run time.

The code may produce a different result.

QUESTION 85
A company has an existing sales application using a Java 8 jar file containing packages:
com.company.customer;
com.company.customer.orders;
com.company.customer.info;
com.company.sales;
com.company.sales.leads;
com.company.sales.closed;
com.company.orders;
com.company.orders.pending;
com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

B)

C)

D)

Option A

Option B

Option C

Option D

QUESTION 86
Given:

What is the result?

The compilation fails at line 9.

The compilation fails at line 2.

Hello World

The compilation fails at line 8.

QUESTION 87
Given:

What is the result?

null

nothing

It fails to compile.

java.lang.IllegalAccessException is thrown.

Student

QUESTION 88

Why does this compilation fail?

The method Y. print (object) does not call the method super.print (object)

The method x. print (object) is not accessible to Y.

In method x. print (Collection), system. Out :: prints is an invalid Java identifier.

The method print (object) and the method print (object…) are duplicates of each other.

The method Y. print (object…) cannot override the final method x.print (object….).

QUESTION 89
Consider this method declaration:

A) “SET SESSION AUTHORIZATION ” + user
B) “SET SESSION AUTHORIZATION ” + stmt.enquoteIdentifier(user)
Is A or B the correct replacement for <EXPRESSION> and why?