[Jan-2022] Latest Oracle 1Z0-819 Certification Practice Test Questions [Q83-Q104]

[Jan-2022] Latest Oracle 1Z0-819  Certification Practice Test Questions

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What is Java SE 11 Developer Exam Number: 1Z0-819 Certification Exam and Retake policy

Oracle Cloud Certification credentials are only valid for a period of 18 months from the date you earn the credential. The certification will become inactive at the end of 18 months. However, for Oracle candidates, it is necessary to hold an active certification in order to have access to various certification benefits including, using Oracle certification logos, certificates, scoring reports, digital badges, and certification verification.

To stay current, candidates have to re-certify themselves with the latest version of the exam. Oracle Cloud Certifications include various titles with levels that are Oracle Certified Associate, Specialist, and Professional. Moreover, the Oracle Cloud Certifications are updated continuously throughout the year for keeping current with major product and service releases and re-released on an annual basis with a new title.

 

NEW QUESTION 83
Given:

Assuming that this code compiles correctly, which three statements are true? (Choose three.)

• A. A is a subtype of B.
• B. A cannot be abstract.
• C. B cannot be final.
• D. B is a subtype of A.
• E. B cannot be abstract.
• F. A cannot be final.

Answer: D,E,F

 

NEW QUESTION 84
Which code fragment prints 100 random numbers?

• A. Option A
• B. Option C
• C. Option B
• D. Option D

Answer: D

 

NEW QUESTION 85
Given:

Which would cause s to be AQCD?

• A. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");
• B. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");
• C. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");
• D. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");

Answer: A

 

NEW QUESTION 86
Given:

Which three are true? (Choose three.)

• A. b1.foo(c) prints Ola Mundo!
• B. b1.foo(c) prints Hello world!
• C. b1.foo(c) prints Bonjour le monde!
• D. f1.foo(c) prints Ola Mundo!
• E. f2.foo(c) prints Hello world!
• F. f2.foo(c) prints Bonjour le monde!
• G. f2.foo(c) prints Ola Mundo!
• H. f1.foo(c) prints Hello world!
• I. f1.foo(c) prints Bonjour le monde!

Answer: A,F,H

 

NEW QUESTION 87
Which two are functional interfaces? (Choose two.)

• A. Option A
• B. Option E
• C. Option B
• D. Option C
• E. Option D

Answer: B,D

 

NEW QUESTION 88
Given the code fragment:

What is the result?

• A. 2 : 3
• B. 3 : 0
• C. -1 : 2
• D. 2 : -1

Answer: D

 

NEW QUESTION 89
Given:

Which two statements are valid to be written in this interface? (Choose two.)

• A. public abstract void methodB();
• B. public void methodF(){System.out.println("F");}
• C. private abstract void methodC();
• D. final void methodE();
• E. public String methodD();
• F. final void methodG(){System.out.println("G");}
• G. public int x;

Answer: A,E

 

NEW QUESTION 90
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 91
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: package java does not exist
• C. javac fails to compile the class and prints the error message, C:\workspace4\Mycar.java:1:error:
  expected import java.lang
• D. javac compiles Mycar.java without errors or warnings.

Answer: D

 

NEW QUESTION 92
Given:

What is the output?

• A. Bonjour le monde!Hello world!
• B. Hello world!Hello world!
• C. Hello world!Bonjour le monde!
• D. Bonjour le monde!Bonjour le monde!

Answer: A

Explanation:

 

NEW QUESTION 93
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 94
Given:

What is the output?

• A. I am an object
• B. I am an array
• C. The compilation fails due to an error in line 1.
• D. I am an object array

Answer: A

 

NEW QUESTION 95
Which describes a characteristic of setting up the Java development environment?

• A. Setting up the Java development environment occurs when you install an IDE before the JDK.
• B. You set up the Java development environment for a specific operating system when you install the JDK.
• C. The Java development environment is set up for all operating systems by default.
• D. Setting up the Java development environment requires that you also install the JRE.

Answer: A

 

NEW QUESTION 96
Analyze the code:

Which two options can you insert inside println method to produce Global:namescope? (Choose two.)

• A. new Test().prefix+new Test().name
• B. Test.getName+prefix
• C. prefix+name
• D. Test.prefix+Test.name
• E. Test.prefix+Test.getName()
• F. prefix+Test.name

Answer: A,E

 

NEW QUESTION 97
Given this requirement:
Module vehicle depends on module part and makes its com.vehicle package available for all other modules.
Which module-info.java declaration meets the requirement?

• A. Option C
• B. Option A
• C. Option B
• D. Option D

Answer: B

 

NEW QUESTION 98
Given:

What is the type of the local variable x?

• A. String
• B. char
• C. String[ ]
• D. Character

Answer: A

 

NEW QUESTION 99
Given:

Which two codes, independently, can be inserted in line to 1 compile?

• A. Abacus aba = (int e, int f) -> { return e * f; };
• B. Abacus aba = (int m, int n) -> { m * n };
• C. Abacus aba = (a, b) -> a * b;
• D. Abacus aba = v, w -> x * y;
• E. Abacus aba = (int i, j) -> ( return i * j; };

Answer: C,E

 

NEW QUESTION 100
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. Hello WorldHello World
• E. An exception is thrown at runtime.

Answer: C

 

NEW QUESTION 101
Given the formula to calculate a monthly mortgage payment:

and these declarations:

How can you code the formula?

• A. m = p * ((r * Math.pow(1 + r, n) / (Math.pow(1 + r, n)) - 1));
• B. m = p * (r * Math.pow(1 + r, n) / (Math.pow(1 + r, n) - 1));
• C. m = p * r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1;
• D. m = p * (r * Math.pow(1 + r, n) / Math.pow(1 + r, n) - 1);

Answer: B

 

NEW QUESTION 102
Given:

Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

• A. void walk(){}
• B. abstract void walk();
• C. public abstract void walk();
• D. protected void walk(){}
• E. private void walk(){}

Answer: C,D

 

NEW QUESTION 103
Given the code fragment:

Which code fragment replaces the for statement?

• A. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);
• B. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);
• C. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);
• D. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

Answer: C

 

NEW QUESTION 104
......

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.

 

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