Jan-2024 Oracle 1z1-819 Actual Questions and Braindumps [Q131-Q151]

By adminOn January 15, 2024

Rate this post

Jan-2024 Oracle 1z1-819 Actual Questions and Braindumps

1z1-819 Dumps To Pass Oracle Exam in 24 Hours – TestKingIT

Oracle 1Z0-819 (Java SE 11 Developer) Certification Exam is an internationally recognized certification program designed for Java developers who want to validate their knowledge and expertise in Java programming. Java SE 11 Developer certification exam covers a wide range of topics, including Java syntax and structure, object-oriented programming, functional programming, error handling, and concurrency. 1z1-819 exam is designed to test the candidate’s understanding of Java SE 11 and their ability to apply Java programming concepts to real-world scenarios.

Java is one of the most popular programming languages in the world, and the demand for skilled Java developers is on the rise. By earning the Oracle Certified Professional: Java SE 11 Developer certification, candidates can demonstrate their proficiency in Java SE 11 and increase their chances of landing high-paying jobs in the software development industry.

QUESTION 131
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

QUESTION 132
Examine this excerpt from the declaration of the java.se module:

What does the transitive modifier mean?

Only a module that requires the java.se module is permitted to require the java.sql module.

Any module that requires the java.se module does not need to require the java.sql module.

Any module that attempts to require the java.se module actually requires the java.sql module instead.

Any module that requires the java.sql module does not need to require the java.se module.

QUESTION 133
Given:

Which two lines cause compilation errors? (Choose two.)

line 12

line 6

line 9

line 8

line 7

QUESTION 134
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 135
Given the code fragment:

What is the result?
EUR -> 0.84

GBP -> 0.75
USD -> 1.00
CNY -> 6.42

The compilation fails.
CNY -> 6.42

EUR -> 0.84
GBP -> 0.75
USD -> 1.00
USD -> 1.00

GBP -> 0.75
EUR -> 0.84
CNY -> 6.42

QUESTION 136
Given:

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

Option A

Option B

Option C

Option D

Option E

QUESTION 137
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 138
How many Thing objects are eligible for garbage collection in line 1?

QUESTION 139
Given:

What is the result?

6910 3

10126 3

6104 3

QUESTION 140
Given:

Which two changes need to be made to make this class compile? (Choose two.)

Change Line 1 to an abstract class:public abstract class API {

Change Line 2 access modifier to protected:protected void checkValue(Object value)throws IllegalArgumentException;

Change Line 1 to a class:public class API {

Change Line 1 to extend java.lang.AutoCloseable:public interface API extends AutoCloseable {

Change Line 2 to an abstract method:public abstract void checkValue(Object value)throws IllegalArgumentException;

QUESTION 141
Given:

What is the result?

WorkingUnknown

Unknown

TuesdayUnknown

The compilation fails.

Tuesday

Working

QUESTION 142
Which two statements correctly describe capabilities of interfaces and abstract classes? (Choose two.)

Interfaces cannot have protected methods but abstract classes can.

Both interfaces and abstract classes can have final methods.

Interfaces cannot have instance fields but abstract classes can.

Interfaces cannot have static methods but abstract classes can.

Interfaces cannot have methods with bodies but abstract classes can.

QUESTION 143
Which code fragment does a service use to load the service provider with a Print interface?

private Print print = new com.service.Provider.PrintImpl();

private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);

private Print print = com.service.Provider.getInstance();

QUESTION 144
Given:

Which three are true? (Choose three.)

b1.foo(c) prints Bonjour le monde!

f1.foo(c) prints Hello world!

f1.foo(c) prints Ola Mundo!

b1.foo(c) prints Hello world!

f2.foo(c) prints Ola Mundo!

b1.foo(c) prints Ola Mundo!

f2.foo(c) prints Bonjour le monde!

f2.foo(c) prints Hello world!

f1.foo(c) prints Bonjour le monde!

QUESTION 145
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.

QUESTION 146
Given:

What is the result?

The compilation fails.

1.99,2.99,0

1.99,2.99,0.0

1.99,2.99

QUESTION 147
Which set of commands is necessary to create and run a custom runtime image from Java source files?

java, jdeps

javac, jlink

jar, jlink

javac, jar

QUESTION 148
Given:

Which two statements can be added at line 1 in Bar to successfully compile it? (Choose two.)

public List<Integer> foo(Set<CharSequence> m) { … }

public ArrayList<Number> foo(Set<CharSequence> m) { … }

public List<Integer> foo(TreeSet<String> m) { … }

public List<Integer> foo(Set<String> m) { … }

public List<Object> foo(Set<CharSequence> m) { … }

public ArrayList<Integer> foo(Set<String> m) { … }

QUESTION 149
Your organization makes mlib.jar available to your cloud customers. While working on a code cleanup project for mlib.jar, you see this method by customers:

What security measures should be added to this method so that it meets the requirements for a customer accessible method?