Oracle Oracle Certifications 1Z0-811 Questions & Answers

• Question 61:

  Which statement is true about primitive variables?

  A. They can be compared with the == operator.

  B. They can be compared with the equals method only.

  C. They cannot be compared.

  D. They can be compared with the compareTo method only.

  Correct Answer: B

  Reference: https://stackoverflow.com/questions/9690981/compare-two-primitive-long-variables-in-java

• Question 62:

  Given the code fragment:

  

  What is the result?

  A. 2

  B. 4

  C. The program executes an infinite number of times.

  D. 3

  Correct Answer: B

• Question 63:

  

  Identify two Java reserved words.

  A. array

  B. true

  C. this

  D. exception

  E. string

  Correct Answer: BC

  Reference: https://www.computerhope.com/jargon/j/java_reserved_words.htm

• Question 64:

  Which statement is true about a Java method?

  A. It must be declared with an access modifier.

  B. It cannot be defined within another method.

  C. It must accept a parameter and return a value.

  D. It cannot be defined as static final.

  Correct Answer: B

  Reference: https://www.quora.com/Can-we-define-a-function-within-another-function-in-Java

• Question 65:

  Given:

  

  And the code fragment:

  

  Which code fragment can be inserted at line n1 to enable the code to print All the best?

  A. void writeMsg();

  B. Messenger.writeMsg();

  C. writeMsg();

  D. m.writeMsg();

  Correct Answer: B

• Question 66:

  Given the code fragment:

  

  Which two code fragments are valid at line 2?

  A. for (int count = 0; count < 5; count++) {

  System.out.print(count);

  }

  B. package p1;

  C. import java.util.*; public void display() { List nums = new ArrayList<> (); }

  D. { private int num; }

  E. private String name = "John"; public void display() { System.out.print(name); }

  Correct Answer: BE

• Question 67:

  You have been asked to develop a Java program that prints the elements of an array in reverse order.

  Which looping statement cannot be used to meet the requirement?

  A. enhanced for

  B. standard for

  C. while

  D. do-while

  Correct Answer: D

  Reference: https://www.javatpoint.com/java-program-to-print-the-elements-of-an-array-in-reverse-order

• Question 68:

  Given the code fragment:

  

  Which statement is true?

  A. The code results in a compilation error. To make it compile, insert at line n1: import java.lang.Math; import java.lang.Random;

  B. The code compiles successfully

  C. The code results in a compilation error. To make it compile, insert at line n1: import java.lang; import java.util;

  D. The code results in a compilation error. To make it compile, insert at line n1: import java.util.*;

  Correct Answer: B

  

• Question 69:

  Given the code fragment:

  

  What is the result?

  A. pen pencil erasers paper

  B. paper pen pencil erasers

  C. A compilation error occurs.

  D. A runtime exception is thrown.

  Correct Answer: D

  

• Question 70:

  Given the code fragment:

  

  Which code fragment, when inserted at line n1, enables the code to print Java Programming:1?

  A. System.out.println(name + ":" + count);

  B. System.out.println(c.name + ":" + count);

  C. System.out.println(c.name + ":" + Course.count);

  D. System.out.println(Course.name + ":" + c.count);

  Correct Answer: C