Oracle Oracle Certifications 1Z0-811 Questions & Answers

• Question 1:

  Given:

  

  What is the output?

  A. 1 2 3 aaaa

  B. 1 2 aaa

  C. Compilation fails

  D. a

  Correct Answer: D

  

• Question 2:

  Given:

  

  What is the result?

  A. The program compiles and nothing is printed.

  B. Iteration plus an increasing number is printed 100 times.

  C. Iteration plus an increasing number is printed 99 times.

  D. An error occurs during compilation.

  Correct Answer: D

• Question 3:

  Given the contents of the Test.java file:

  

  What is the result?

  A. 200 : 400

  B. A compilation error occurs at line n1.

  C. A compilation error occurs at line n2.

  D. 100 : 400

  Correct Answer: C

  

• Question 4:

  Given the code fragment:

  

  What is the result?

  A. a memory address1 in hexadecimal number format a memory address2 in hexadecimal number format

  B. 10, 15 [10, 15]

  C. 0, 10, 15 [10, 15, null]

  D. a memory address in hexadecimal number format [10, 15]

  Correct Answer: D

  

• Question 5:

  Given the code fragment:

  

  What is the result?

  A. A compilation error occurs at line n1.

  B. Jack

  C. The program prints either Jack or Queen.

  D. Queen

  Correct Answer: A

  

• Question 6:

  Which package would you import to use the Random class?

  A. java.io

  B. java.math

  C. java.util

  D. java.lang

  Correct Answer: C

  Reference: https://www.educative.io/edpresso/how-to-generate-random-numbers-in-java

• Question 7:

  Which two components can class declarations include?

  A. A list of instance methods

  B. The main method

  C. Interfaces implemented by the class

  D. The public modifier

  Correct Answer: CD

  Reference: https://docs.oracle.com/javase/tutorial/java/javaOO/classdecl.html

• Question 8:

  

  Given the code fragment:

  

  What is the result?

  A. 3 : 1

  B. 3 : 2

  C. 0 : 1

  D. 2 : 0

  Correct Answer: B

• Question 9:

  

  Identify three advantages of object-oriented programming.

  A. separation of state and behavior

  B. modularity

  C. information sharing

  D. code reuse

  E. information hiding

  Correct Answer: BDE

  Reference: https://www.tutorialspoint.com/object_oriented_analysis_design/ooad_quick_guide.htm

• Question 10:

  Given the code fragment:

  

  What is the result?

  A. 25.67

  B. 25.00

  C. 25.7

  D. 26

  Correct Answer: A