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1Z0-819 Certification Overview Latest 1Z0-819 PDF Dumps
How to Prepare For Java SE 11 Developer Exam Number: 1Z0-819
Preparation Guide for Java SE 11 Developer Exam Number: 1Z0-819
Introduction for Java SE 11 Developer Exam Number: 1Z0-819
1Z0-006 exam is for those that have completed the Database Foundations, Database Design and Programming with SQL (Oracle Academy training), Oracle Database 12c Administration Workshop or Oracle Database Introduction to SQL training. Passing this exam gives the certification credential demonstrating your understanding of the different types of database models and components. And, you will enhance knowledge of database components, concepts and design, implementation of business roles, SQL language and queries, and ERD modeling and languages to manage data and transactions.
The Java SE 11 Developer Exam Number: 1Z0-819 is recommended for the following candidates who have:
- Desirable to have completed some or all of my Java Masterclass
- Have a desire to get Java certified and earn more money
- Exposure to the Java programming language
- Be a professional programmer with Java experience
- Preferably have completed all or part of my Java Masterclass here on Udemy (or another Java course)
Becoming Java certified is a great way to help improve your career options with more job opportunities and more pay. That’s because Oracle’s Java certification program, unlike many other certifications out there, has real value in the industry. One of the main reasons is that it’s an official Oracle certification, but second, the exam is quite difficult to pass. Employers see programmers who are Java certified as more valuable than programmers who are not certified. So it’s totally worth getting Java certified to take advantage of this.
ORACLE 1Z0-006 practice tests and ORACLE 1Z0-006 practice exams are designed specifically for candidates to gain an uperhand on experience and knowledge to get through this exam.
NEW QUESTION 10
Given:
Which two allow a.Main to allocate a new Person? (Choose two.)
- A. In Line 1, change the access modifier to privateprivate Person() {
- B. In Line 2, add extends Person to the Main classpublic class Main extends Person {and change Line 3 to create a new Main objectPerson person = new Main();
- C. In Line 1, change the access modifier to publicpublic Person() {
- D. In Line 2, change the access modifier to protectedprotected class Main {
- E. In Line 1, remove the access modifierPerson() {
Answer: B,C
NEW QUESTION 11
Given:
What is the result?
- A. Dr. Who
- B. Dr. Null
- C. An exception is thrown at runtime.
- D. null
Answer: D
Explanation:
NEW QUESTION 12
You are working on a functional bug in a tool used by your development organization. In your investigation, you find that the tool is executed with a security policy file containing this grant.
What action should you take?
- A. Remove the grant because it is excessive.
- B. Nothing, because it is not related to the bug you are investigating.
- C. File a security bug against the tool referencing the excessive permission granted.
- D. Nothing, because it is an internal tool and not exposed to the public.
- E. Nothing, because listing just the required permissions would be an ongoing maintenance challenge.
Answer: C
NEW QUESTION 13
Given the code fragment:
var pool = Executors.newFixedThreadPool(5);
Future outcome = pool.submit(() > 1);
Which type of lambda expression is passed into submit()?
- A. java.lang.Runnable
- B. java.util.function.Predicate
- C. java.util.function.Function
- D. java.util.concurrent.Callable
Answer: D
NEW QUESTION 14
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)
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: C
NEW QUESTION 15
Given:
What is the result?
- A. 6=(x+y)=6
- B. 6=(x+y)=42
- C. An exception is thrown at runtime.
- D. 42=(x+y)=42
- E. 42=(x+y)=6
Answer: B
Explanation:
NEW QUESTION 16
Given the code fragment:
You must make the countvariable thread safe.
Which two modifications meet your requirement? (Choose two.)
- A. replace line 1 with private volatile int count = 0;
- B. replace line 3 with
synchronized(test) {
test.count++;
} - C. replace line 3 with
synchronized(test.count) {
test.count++;
} - D. replace line 2 with public static synchronized void main(String[] args) {
- E. replace line 1 with private AtomicInteger count = new AtomicInteger(0);and replace line 3 with test.count.incrementAndGet();
Answer: C,E
Explanation:
Explanation/Reference: https://stackoverflow.com/questions/15852123/java-thread-safe-counter/15852164
NEW QUESTION 17
Given:
Which line of code results in a compilation error?
- A. line n4
- B. line n3
- C. line n2
- D. line n1
Answer: A
Explanation:
NEW QUESTION 18
Given:
Which two are correct? (Choose two.)
- A. The output will be exactly 2 1 3 4 5.
- B. Replacing forEach() with forEachOrdered(), the program prints 1 2 3 4 5.
- C. The program prints 1 4 2 3, but the order is unpredictable.
- D. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5, but the order is unpredictable.
- E. Replacing forEach() with forEachOrdered(), the program prints 2 1 3 4 5.
Answer: B,C
Explanation:
NEW QUESTION 19
Given:
Which two independent changes will make the Main class compile? (Choose two.)
- A. Change line 1 to public class Student {.
- B. Change line 3 to Student student = new Student("Biology");.
- C. Change line 2 to public Student(String classname).
- D. Move the entire Student class declaration to a separate Java file, Student.java.
- E. Change line 1 to static class Student {.
Answer: B,C
Explanation:
NEW QUESTION 20
Given:
What is the type of the local variable x?
- A. String
- B. char
- C. String[ ]
- D. Character
Answer: A
NEW QUESTION 21
Given:
Which annotation should be used to remove warnings from compilation?
- A. @SuppressWarnings("unchecked") on main and @SafeVarargs on the print method
- B. @SuppressWarnings on the main and print methods
- C. @SuppressWarnings("rawtypes") on main and @SafeVarargs on the print method
- D. @SuppressWarnings("all") on the main and print methods
Answer: A
Explanation:
NEW QUESTION 22
Given:
What is the result?
A)
B)
C)
D)
- A. Option C
- B. Option A
- C. Option B
- D. Option D
Answer: B
NEW QUESTION 23
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?
- A. Option A
- B. Option B
- C. Option C
- D. Option D
Answer: C
NEW QUESTION 24
Given:
What is the output?
- A. A NoSuchElementException is thrown at run time.
- B. null
- C. Duke
- D. A NullPointerException is thrown at run time.
Answer: C
Explanation:
NEW QUESTION 25
Given:
String originalPath = "data\\projects\\a-project\\..\\..\\another-project"; Path path = Paths.get(originalPath); System.out.print(path.normalize()); What is the result?
- A. data\another-project
- B. data\projects\a-project\another-project
- C. data\\projects\\a-project\\..\\..\\another-project
- D. data\projects\a-project\..\..\another-project
Answer: D
Explanation:
NEW QUESTION 26
Given:
This code results in a compilation error.
Which code should be inserted on line 1 for a successful compilation?
- A. Consumer consumer = (String args) -> System.out.print(args);
- B. Consumer consumer = System.out::print;
- C. Consumer consumer = var arg -> {System.out.print(arg);};
- D. Consumer consumer = msg -> { return System.out.print(msg); };
Answer: B
Explanation:
NEW QUESTION 27
Given:
and
What is the result?
Joe
- A. null
- B. Mary
Joe - C. Marry
null - D. null
null
Answer: D
Explanation:
NEW QUESTION 28
Given:
What is the result?
- A. [0). o, | 1). i, | 2). r]
- B. [). o, | 1). a, | 2).]
- C. The compilation fails.
[0). D, | 1). i, | 2). a] - D. ArrayIndexOutOfBounds Exception is thrown at runtime.
- E.
Answer: C
NEW QUESTION 29
Given:
Which two method implementations are correct, when inserted independently in line 1? (Choose two.)
- A. Option E
- B. Option C
- C. Option A
- D. Option B
- E. Option D
Answer: A,C
NEW QUESTION 30
Given:
What is the output?
banana orange apple lemon
- A. -----
----- - B. banana orange apple lemon
-----
apple banana lemon orange
----- - C. -----
apple banana lemon orange
-----
----- - D. -----
banana orange apple lemon apple banana lemon orange
banana orange apple lemon apple banana lemon orange - E. -----
-----
Answer: D
Explanation:
NEW QUESTION 31
Given:
What is the type of the local variable x?
- A. String
- B. char
- C. String[ ]
- D. Character
Answer: A
NEW QUESTION 32
Given:
Which two methods facilitate valid ways to read instance fields? (Choose two.)
- A. getCCount
- B. getTCount
- C. getGCount
- D. getTotalCount
- E. getACount
Answer: A,D
NEW QUESTION 33
......
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