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PASS RATE Oracle Java SE 1Z0-819 Certified Exam DUMP
Oracle 1z1-819 (Java SE 11 Developer) Exam is a certification exam that validates the skills and knowledge of Java developers. Java is one of the most widely-used programming languages in the world, and is used to develop a wide range of applications for desktop, mobile, and web platforms. 1Z0-819 exam is designed to test the candidate's proficiency in Java SE 11, the latest version of Java released by Oracle.
Oracle 1Z0-819 (Java SE 11 Developer) certification exam is widely recognized in the industry and is highly valued by employers. Passing 1Z0-819 exam demonstrates that a developer has a deep understanding of Java SE 11 and is capable of developing high-quality applications using this technology. It also opens up new career opportunities and can lead to higher salaries and more challenging roles within an organization.
NEW QUESTION # 58
Which two interfaces are considered to be functional interfaces? (Choose two.)
@FunctionalInterface
- A. interface InterfaceE {
public boolean equals(int i);
int breed(int x);
}
interface InterfaceA { - B. interface InterfaceC {
public boolean equals(Object o);
int breed(int x);
int calculate(int x, int y);
}
@FunctionalInterface - C. int GERM = 13;
public default int getGERM() { return GERM; }
}
interface InterfaceB { - D. interface InterfaceD {
int breed(int x);
}
@FunctionalInterface - E. int GERM = 13;
public default int getGERM() { return get(); }
private int get() { return GERM; }
public boolean equals(Object o);
int breed(int x);
}
Answer: A,B
Explanation:
Explanation/Reference:
NEW QUESTION # 59
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 B
- B. Option D
- C. Option C
- D. Option A
Answer: C
NEW QUESTION # 60
Given:
And the command:
java Main Helloworld
What is the result ?
- A. A NullPointerException is thrown at run time.
- B. Input: Echo:
- C. Input: Echo: Helloworld
- D. Input: Helloworld Echo: Helloworld
- E. Input: Then block until any input comes from System.in.
Answer: E
Explanation:
NEW QUESTION # 61
Given:
Which three are true? (Choose three.)
- A. f2.foo(c) prints Ola Mundo!
- B. b1.foo(c) prints Ola Mundo!
- C. f1.foo(c) prints Ola Mundo!
- D. b1.foo(c) prints Bonjour le monde!
- E. b1.foo(c) prints Hello world!
- F. f1.foo(c) prints Bonjour le monde!
- G. f2.foo(c) prints Hello world!
- H. f2.foo(c) prints Bonjour le monde!
- I. f1.foo(c) prints Hello world!
Answer: B,H,I
NEW QUESTION # 62
Given:
What is the result?
- A. Good Night, Potter
- B. Good Morning, Potter
- C. Good Morning, Harry
- D. Good Night, Harry
Answer: A
Explanation:
NEW QUESTION # 63
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 fails because a final class cannot extend another class.
- C. The compilation fails because there is no zero args constructor defined in class X.
- D. The compilation succeeds.
Answer: A
Explanation:
NEW QUESTION # 64
Given a Memberclass with fields for nameand yearsMembership, including getters and setters and a print method, and a list of clubMembersmembers:
Which two Stream methods can be changed to use method references? (Choose two.)
- A. peek(Member::print)
- B. filter(Member::getYearsMembership() >= testMembershipLength)
- C. filter(Integer::equals(0))
- D. map(testName::compareToIgnoreCase)
Answer: B,D
NEW QUESTION # 65
Given the code fragment:
What is the result?
- A. The compilation fails.
- B. An ArrayIndexOutOfBoundsException is thrown at runtime.
- C. ad be cf
- D. abc def
- E. ab cd ef
Answer: C
NEW QUESTION # 66
Given the code fragment:
You want to examine whether path is a directory.
Which code inserted on line 1 will accomplish this?
- A. BasicFileAttributes attributes = Files.readAttributes(path, BasicFileAttributes.class
- B. BasicFileAttributes attributes = Files isDirectory (path);
- C. BasicFileAttributes attributes = Files, readAttributes (path, FileAttributes, class);
- D. BasicFileAttributes attributes =Files.getAttribute (path, ''insdirectory'');
Answer: C
NEW QUESTION # 67
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 fails because a final class cannot extend another class.
- C. The compilation fails because there is no zero args constructor defined in class X.
- D. The compilation succeeds.
Answer: A
Explanation:
NEW QUESTION # 68
Given:
Examine these requirements:
Eliminate code duplication.
Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?
- A. Option D
- B. Option A
- C. Option C
- D. Option B
Answer: D
NEW QUESTION # 69
Given:
What is the result?
- A. 0
- B. The compilation fails.
- C. An exception is thrown at runtime.
- D. 1
Answer: B
NEW QUESTION # 70
There is a copyServiceAPI that has the org.copyservice. spi. Copy interface To use this service in a module, which module- info.java would be correct?
A)
B)
C)
D)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: C
NEW QUESTION # 71
Given:
Which statement is true?
- A. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.
- B. Only LocalDate class from java.time package is loaded.
- C. All classes from the package java.time. are loaded for the class Diary.
- D. Tester must import java.time.LocalDate in order to compile.
Answer: A
NEW QUESTION # 72
Given:
Which two are secure serialization of these objects? (Choose two.)
- A. Define the serialPersistentFields array field.
- B. Declare fields transient.
- C. Make the class abstract.
- D. Implement only writeReplace to replace the instance with a serial proxy and not readResolve.
- E. Implement only readResolve to replace the instance with a serial proxy and not writeReplace.
Answer: A,E
NEW QUESTION # 73
Given:
What is the result?
- A. The compilation fails.
- B. 1.99,2.99,0.0
- C. 1.99,2.99,0
- D. 1.99,2.99
Answer: A
Explanation:
NEW QUESTION # 74
Examine these module declarations:
Which two statements are correct? (Choose two.)
- A. The ServiceProvider module does not know the identity of a module (such as Consumer) that uses the
- B. The Consumer module should require the ServiceProvider module.
- C. The placement of the com.example.api API in a separate module, ServiceAPI, makes it easy to install multiple provider modules.
- D. The ServiceProvider module is the only module that, at run time, can provide the com.example.api API.
- E. The ServiceProvider module should export the com.myimpl package.
Answer: B,D
Explanation:
com.example.api API.
NEW QUESTION # 75
Given the code fragment:
What is the result?
- A. 0
- B. 1
- C. It prints 1 in the infinite loop.
- D. 01
- E. The program prints nothing.
Answer: E
NEW QUESTION # 76
Given:
executed using command:
java Hello "Hello World" Hello World
What is the output?
- A. Hello WorldHelloWorld
- B. HelloHello WorldHelloWorld
- C. Hello World Hello World
- D. An exception is thrown at runtime.
- E. Hello WorldHello World
Answer: C
NEW QUESTION # 77
Given:
List<String> longlist = List.of("Hello","World","Beat");
List<String> shortlist = new ArrayList<>();
Which code fragment correctly forms a short list of words containing the letter "e"?
- A. Option B
- B. Option D
- C. Option A
- D. Option C
Answer: B
NEW QUESTION # 78
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 B
- B. Option D
- C. Option C
- D. Option A
Answer: C
NEW QUESTION # 79
......
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