100% Free Real Updated 1z1-819 Questions & Answers Pass Your Exam Easily [Q52-Q76]

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100% Free Real Updated 1z1-819 Questions & Answers Pass Your Exam Easily

Easily To Pass New 1z1-819 Verified & Correct Answers

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QUESTION 52
Given:

What is the result?

is it 1

An IndexOutOfBoundsException is thrown at runtime.

is it 0

this is it 2

this is it 3

QUESTION 53
Given the code fragment:

What is the result?

123

QUESTION 54
A bookstore’s sales are represented by a list of Sale objects populated with the name of the customer and the books they purchased.
public class Sale {
private String customer;
private List<Book> items;
// constructor, setters and getters not shown
}
public class Book {
private String name;
private double price;
// constructor, setters and getters not shown
}
Given a list of Sale objects, tList, which code fragment creates a list of total sales for each customer in ascending order?

Option A

Option B

Option C

Option D

QUESTION 55
Given:

Which two are correct? (Choose two.)

Option A

Option B

Option C

Option D

QUESTION 56
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?

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

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

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

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

QUESTION 57
Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

after line 8

after line 6

after line 5

after line 10

QUESTION 58
Given the code fragment:

Which can replace line 11?

UnaryOperator<Interger > uo = (var x ) -> (x * 3);

UnaryOperator<Interger >uo = var x -> { return x 3 ; };

UnaryOperator<Interger >uo = x -> { return x * 3; };

UnaryOperator<Interger >uo = (int x) -> x * 3;

QUESTION 59
Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?

The compilation fails because there is no zero args constructor defined in class X.

The compilation fails because either class X or class Y needs to implement the toString() method.

The compilation fails because a final class cannot extend another class.

The compilation succeeds.

QUESTION 60
Given this enum declaration:

Examine this code:
System.out.println(Alphabet.getFirstLetter());
What code should be written at line 3 to make this code print A?

final String getFirstLetter() { return A.toString(); }

static String getFirstLetter() { return Alphabet.values()[1].toString(); }

static String getFirstLetter() { return A.toString(); }

String getFirstLetter() { return A.toString(); }

QUESTION 61
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 62
Given:

What is the result?

QUESTION 63
Given:
jdeps -jdkinternals C:workspace4SimpleSecurityjarclasses.jar
Which describes the expected output?

jdeps lists the module dependencies and the package names of all referenced JDK internal APIs. If any are found, the suggested replacements are output in the console.

jdeps outputs an error message that the -jdkinternals option requires either the -summary or the – verbose options to output to the console.

The -jdkinternals option analyzes all classes in the .jar and prints all class-level dependencies.

The -jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

Explanation
-jdkinternals option analyzes all classes in the .jar for class-level dependencies on JDK internal APIs. If any are found, the results with suggested replacements are output in the console.

QUESTION 64
Given:
var fruits = List.of(“apple”, “orange”, “banana”, “lemon”);
You want to examine the first element that contains the character n. Which statement will accomplish this?

String result = fruits.stream().filter(f > f.contains(“n”)).findAny();

fruits.stream().filter(f > f.contains(“n”)).forEachOrdered(System.out::print);

Optional<String> result = fruits.stream().filter(f > f.contains (“n”)).findFirst ();

Optional<String> result = fruits.stream().anyMatch(f > f.contains(“n”));

QUESTION 65
Examine these module declarations:

Which two statements are correct? (Choose two.)

The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.

The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.

The Consumer module should require the ServiceProvider module.

The ServiceProvider module should export the com.myimpl package.

The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the

com.example.api API.

QUESTION 66
Given:

What is the type of the local variable x?

Character

char

String[ ]

String

QUESTION 67
Given:

Which is true?

System.out is the standard output stream. The stream is open only when System.out is called.

System.in cannot reassign the other stream.

System.out is an instance of java.io.OutputStream by default.

System.in is the standard input stream. The stream is already open.

QUESTION 68
Given:

Which two are correct? (Choose two.)

The output will be exactly 2 1 3 4 5.

The program prints 1 4 2 3, but the order is unpredictable.

Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.

Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.

Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.

QUESTION 69
Given:

What is the result?

2,34,34,5

2,34,54,5

2,54,54,5

2,34,54,3

QUESTION 70
Given the code fragment:

Which code fragment replaces the for statement?

IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);

IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);

IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);

QUESTION 71
Given:

Which two are secure serialization of these objects? (Choose two.)

Define the serialPersistentFields array field.

Declare fields transient.

Implement only readResolve to replace the instance with a serial proxy and not writeReplace.

Make the class abstract.

Implement only writeReplace to replace the instance with a serial proxy and not readResolve.

QUESTION 72
Given:
var fruits = List.of(“apple”, “orange”, “banana”, “lemon”);
You want to examine the first element that contains the character n. Which statement will accomplish this?

String result = fruits.stream().filter(f -> f.contains(“n”)).findAny();

fruits.stream().filter(f -> f.contains(“n”)).forEachOrdered(System.out::print);

Optional<String> result = fruits.stream().filter(f -> f.contains (“n”)).findFirst ();

Optional<String> result = fruits.stream().anyMatch(f -> f.contains(“n”));