Oracle 1z1-819 Dumps - The Sure Way To Pass Exam
1z1-819 Exam Questions (Updated 2022) 100% Real Question Answers
Who should take the Java SE 11 Developer Exam Number: 1Z0-819
This exam helps students to understand the basic relational database concepts. Moreover, it will teach the students about data modeling concepts, building Entity Relationship Diagrams (ERDs), and mapping ERDs. Moreover, with this project-based learning techniques, students will be able to create and work with projects to design, implement, and demonstrate a database solution for a business or organization.
Understanding functional and technical aspects of Java SE 11 Developer Exam Number: 1Z0-819
The following will be discussed in the ORACLE 1Z0-006 dumps:
- Declare and instantiate Java objects including nested class objects, and explain objectsâ - lifecycles (including creation, dereferencing by reassignment, and garbage collection)
- Develop code that mitigates security threats such as denial of service, code injection, input validation and ensure data integrity
- Define and use fields and methods, including instance, static and overloaded methods
- Understand variable scopes, apply encapsulation and make objects immutable
- Secure resource access including filesystems, manage policies and execute privileged code
- Create and use enumerations
- Utilize polymorphism and casting to call methods, differentiate object type versus reference type
- Create and use interfaces, identify functional interfaces, and utilize private, static, and default methods
- Initialize objects and their members using instance and static initialiser statements and constructors
- Create and use subclasses and superclasses, including abstract classes
Certification Path for Java SE 11 Developer Exam Number: 1Z0-819
Java SE 11 Developer Exam Number: 1Z0-819 is a fundamental exam. Successful completion by candidates will allow them to achieve Oracle Certified Professional: Java SE 11 Developer.
NEW QUESTION 62
Given:
What is known about the Sportscar class?
- A. The Sportscar subclass cannot override setTurbo method from the superclass Automobile.
- B. The Sportscar class inherits the setTurbo method from the superclass Automobile.
- C. The Sportscar class is a subclass of Automobile and inherits its methods.
- D. The Sportscar class is a superclass that has more functionality than the Automobile class.
Answer: C
NEW QUESTION 63
Which interface in the java.util.function package can return a primitive type?
- A. Supplier
- B. ToDoubleFunction
- C. BiFunction
- D. LongConsumer
Answer: B
NEW QUESTION 64
Given:
What is the expected result of javac?
- A. javac fails to compile the class and prints the error message, Error: Could not find or load main class Mycar.class
- B. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: expected import java.lang
- C. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error: package java does not exist
- D. javac compiles Mycar.java without errors or warnings.
Answer: D
NEW QUESTION 65
Given the code fragment:
What is the result?
- A. 2 : 3
- B. 3 : 0
- C. -1 : 2
- D. 2 : -1
Answer: D
NEW QUESTION 66
Given:
What is the result?
- A. 6 13
- B. 5 12
- C. 0 5
- D. compilation error
Answer: D
Explanation:
NEW QUESTION 67
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 68
Examine this excerpt from the declaration of the java.se module:
What does the transitive modifier mean?
- A. Only a module that requires the java.se module is permitted to require the java.sql module.
- B. Any module that requires the java.se module does not need to require the java.sql module.
- C. Any module that attempts to require the java.se module actually requires the java.sql module instead.
- D. Any module that requires the java.sql module does not need to require the java.se module.
Answer: A
NEW QUESTION 69
Given:
What is the result?
- A. The compilation fails due to an error in line 3.
- B. The compilation fails due to an error in line 4.
- C. 0
- D. The compilation fails due to an error in line 2.
- E. 1
- F. The compilation fails due to an error in line 5.
- G. The compilation fails due to an error in line 1.
Answer: E
NEW QUESTION 70
Given:
and the code fragment:
What is the result?
9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt
- A. Compilations fails at Line 1.
- B. 9001: APPLICATION ERROR-9001-MyFile.txt
- C. 9001: java.io.FileNotFoundException: MyFile.txt-MyFile.txt
9001: APPLICATION ERROR-9001-MyFile.txt - D.
Answer: A
NEW QUESTION 71
Which two statements are correct about modules in Java? (Choose two.)
- A. module-info.java cannot be empty.
- B. module-info.java can be placed in any folder inside module-path.
- C. By default, modules can access each other as long as they run in the same folder.
- D. A module must be declared in module-info.java file.
- E. java.base exports all of the Java platforms core packages.
Answer: D,E
NEW QUESTION 72
Given:
What is the result?
- A. abd
- B. adf
- C. abdf
- D. abcd
- E. The compilation fails.
Answer: D
NEW QUESTION 73
Given:
executed using this command:
java Myclass My Car is red
What is the output of this class?
- A. My--is--java
- B. Car--red--My
- C. java--Myclass--My
- D. Myclass--Car--red
- E. My--Car--is
Answer: B
NEW QUESTION 74
Given:
What is the result?
- A. Good Morning, Harry
- B. Good Night, Harry
- C. Good Morning, Potter
- D. Good Night, Potter
Answer: D
Explanation:
NEW QUESTION 75
Given the Person class with age and name along with getter and setter methods, and this code fragment:
What will be the result?
- A. Tom Peter Aman
- B. Tom Aman Peter
- C. Aman Tom Peter
- D. Aman Peter Tom
Answer: D
NEW QUESTION 76
Which two statements independently compile? (Choose two.)
- A. List<? extends Number> list = new ArrayList<Byte>();
- B. List<? extends Number> list = new ArrayList<Object>();
- C. List<? super Number> list = new ArrayList<Integer>();
- D. List<? super Float> list = new ArrayList<Double>();
- E. List<? super Short> list = new ArrayList<Number>();
Answer: A,E
Explanation:
NEW QUESTION 77
Given:
What is the result?
- A. 0
- B. 1
- C. An exception is thrown at runtime.
- D. 2
Answer: B
Explanation:
NEW QUESTION 78
Which is the correct order of possible statements in the structure of a Java class file?
- A. package, import, class
- B. class, package, import
- C. package, class, import
- D. import, package, class
- E. import, class, package
Answer: A
NEW QUESTION 79
Given:
What is the result?
- A. Hello
- B. NullPointerException is thrown at line 4.
- C. NullPointerException is thrown at line 10.
- D. A compilation error occurs.
Answer: A
Explanation:
NEW QUESTION 80
Given:
Automobile.java
Car.java
What must you do so that the code prints 4?
- A. Remove the parameter from wheels method in line 3.
- B. Remove abstract keyword in line 1.
- C. Add @Override annotation in line 2.
- D. Replace the code in line 2 with Car ob = new Car();
Answer: C
Explanation:
NEW QUESTION 81
Given:
public class X {
}
and
public final class Y extends X {
}
What is the result of compiling these two classes?
- A. The compilation fails because either class X or class Y needs to implement the toString() method.
- B. The compilation succeeds.
- C. The compilation fails because a final class cannot extend another class.
- D. The compilation fails because there is no zero args constructor defined in class X.
Answer: A
Explanation:
NEW QUESTION 82
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