[Aug-2022] Dumps Brief Outline Of The 1Z0-819 Exam - ValidBraindumps [Q36-Q51]

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[Aug-2022] Dumps Brief Outline Of The 1Z0-819 Exam – ValidBraindumps

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NO.36 Given an application with a main module that has this module-info.java file:

Which two are true? (Choose two.)

A module providing an implementation of country.CountryDetails can be compiled and added without recompiling the main module.

A module providing an implementation of country.CountryDetails must have a requires main; directive in its module-info.java file.

An implementation of country.countryDetails can be added to the main module.

To compile without an error, the application must have at least one module in the module source path that provides an implementation of country.CountryDetails.

To run without an error, the application must have at least one module in the module path that provides an implementation of country.CountryDetails.

Reference:
/java-9-error-not-in-a-module-on-the-module-source- path

NO.37 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));

NO.38 Which three annotation uses are valid? (Choose three.)

Function<String, String> func = (@NonNull x) > x.toUpperCase();

var v = “Hello” + (@Interned) “World”

Function<String, String> func = (var @NonNull x) > x.toUpperCase();

Function<String, String> func = (@NonNull var x) > x.toUpperCase();

var myString = (@NonNull String) str;

var obj = new @Interned MyObject();

NO.39 What makes Java dynamic?

At runtime, classes are loaded as needed, and new code modules can be loaded on demand.

The runtime can process machine language sources as well as executables from different language compilers.

The Java compiler uses reflection to test if class methods are supported by resources of a target platform.

The Java compiler preprocesses classes to run on specific target platforms.

NO.40 Which is a proper JDBC URL?

jdbe.mysql.com://localhost:3306/database

http://localhost.mysql.com:3306/database

http://localhost
mysql.jdbc:3306/database

jdbc:mysql://localhost:3306/database

NO.41 Given:

Which two constructors will compile and set the class field strings? (Choose two.)

Option A

Option B

Option C

Option D

Option E

NO.42 Given:

What is the result?

NullPointerException is thrown at line 4.

NullPointerException is thrown at line 10.

A compilation error occurs.

Hello

NO.43 Given:

and
checkQuality(QUALITY.A);
and

Which code fragment can be inserted into the switch statement to print Best?

QUALITY.A.ValueOf()

A.toString()

QUALITY.A

NO.44 Given:

What is the result?

nothing

It fails to compile.

A java.lang.IllegalArgumentException is thrown.

NO.45 Given:

What is the result?

The compilation fails due to an error in line 4.

The compilation fails due to an error in line 3.

The compilation fails due to an error in line 2.

The compilation fails due to an error in line 1.

The compilation fails due to an error in line 5.

NO.46 Given:

What is the result?

Orange Juice

The compilation fails.

Orange Juice Apple Pie Lemmon Ice Raspberry Tart

The program prints nothing.

NO.47 Given:

executed using this command:
java Myclass My Car is red
What is the output of this class?

Car–red–My

My–Car–is

My–is–java

java–Myclass–My

Myclass–Car–red

NO.48 Given:

What is the result?

null

Joe Bloggs

The compilation fails due to an error in line 1.

NO.49 Given:

executed using command:
java Hello “Hello World” Hello World
What is the output?

An exception is thrown at runtime.

Hello WorldHello World

Hello World Hello World

Hello WorldHelloWorld

HelloHello WorldHelloWorld

NO.50 Which three guidelines are used to protect confidential information? (Choose three.)

Limit access to objects holding confidential information.

Clearly identify and label confidential information.

Manage confidential and other information uniformly.

Transparently handle information to improve diagnostics.

Treat user input as normal information.

Validate input before storing confidential information.

Encapsulate confidential information.

NO.51 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.

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[Aug-2022] Dumps Brief Outline Of The 1Z0-819 Exam – ValidBraindumps [Q36-Q51]

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