Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 11:

  Given the code fragment:

  

  What is the result?

  A. December 17, 2018 12/17/18
  B. 12/17/18 Dec 17, 2018
  C. Friday, December 17, 2018 December 17, 2018
  D. Dec 17, 2018 12/17/18
  D. Dec 17, 2018 12/17/18

• Question 12:

  Which interface in the java.util.function package can return a primitive type?

  A. ToDoubleFunction
  B. Supplier
  C. BiFunction
  D. LongConsumer
  A. ToDoubleFunction

• Question 13:

  Given the code fragment:

  

  Which statement prints the same value of result? (Choose two.)

  A. System.out.printIn(IntStream.range(0, 99).count());
  B. System.out.printIn(IntStream.rangeClosed(1, 100).count());
  C. System.out.printIn(IntStream.range(1, 100).count());
  D. System.out.printIn(IntStream.rangeClosed(0, 100).map(x -> x).count());
  B. System.out.printIn(IntStream.rangeClosed(1, 100).count());

• Question 14:

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

• Question 15:

  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 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
  C. Option C

• Question 16:

  Given the code fragment:

  

  What is the result?

  

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

• Question 17:

  Given:

  

  What is the output?

  A. 30
  B. 35
  C. 41
  D. 46
  A. 30

• Question 18:

  Given the code fragment:

  

  What is the result?

  A. ab cd ef
  B. An ArrayIndexOutOfBoundsException is thrown at runtime.
  C. The compilation fails.
  D. abc def
  E. ad be cf
  E. ad be cf

• Question 19:

  Given:

  

  Which two methods modify field values? (Choose two.)

  A. setAllCounts
  B. setACount
  C. setGCount
  D. setCCount
  E. setTCount
  C. setGCount
  D. setCCount

• Question 20:

  Given the content from the course.txt file:

  

  Given the code fragment:

  

  Which code fragment at line 1 prints the lines that contain Java from the course.txt file?

  

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