Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 291:

  Given:

  

  What is the result?

  A. 1 2 followed by an exception
  B. 1 2 4 5
  C. A ConcurrentModificationException is thrown at run time.
  D. 1 2 3 followed by an exception
  C. A ConcurrentModificationException is thrown at run time.

• Question 292:

  Given these classes:

  

  and this the code fragment:

  

  What is the result?

  A. The program throws an exception.
  B. The program prints: A
  C. The program prints: C
  D. The program fails to compile.
  A. The program throws an exception.

• Question 293:

  Given the content:

  

  What is the result?

  

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

• Question 294:

  Given:

  

  What is the result?

  A. -6
  B. -0-1-3-6
  C. The compilation fails due to an error in line 1.
  D. -0-1-3
  A. -6

• Question 295:

  Given:

  

  and

  

  Which statement is true?

  A. The memory allocated for Jack object can be reused in line 2.
  B. The memory allocated for Jane object can be reused in line 1.
  C. The memory allocated for Jane object can be reused in line 2.
  D. The memory allocated for John object can be reused in line 1.
  D. The memory allocated for John object can be reused in line 1.

• Question 296:

  You replace the code on line 1 to use ParallelStream.

  

  Which one is correct?

  A. The code will produce the same result.
  B. The compilation fails.
  C. A NoSuchElementException is thrown at run time.
  D. The code may produce a different result.
  D. The code may produce a different result.

• Question 297:

  Given:

  

  Which statement on line 1 enables this code to compile?

  A. Consumer function = (String f) -> (System.out.println(f);};
  B. Supplier function = () -> fruits.get (0);
  C. Predicate function = a -> a.equals("banana");
  D. Function function = x -> x.substring(0,2);
  A. Consumer function = (String f) -> (System.out.println(f);};

• Question 298:

  Given: What is the output?

  

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

• Question 299:

  Given:

  

  Which is true?

  A. The compilation fails due to an error in line 6.
  B. The compilation succeeds.
  C. The compilation fails due to an error in line 4.
  D. The compilation fails due to an error in line 10.
  E. The compilation fails due to an error in line 7.
  F. The compilation fails due to an error in line 9.
  G. The compilation fails due to an error in line 2.
  A. The compilation fails due to an error in line 6.

• Question 300:

  Assuming the Widget class has a getPrice method, this code does not compile:

  

  Which two statements, independently, would allow this code to compile? (Choose two.)

  A. Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
  B. Replace line 1 with List widgetStream = widgets.stream();.
  C. Replace line 5 with widgetStream.filter((Widget a) > a.getPrice() > 20.00).
  D. Replace line 4 with Stream widgetStream = widgets.stream();.
  A. Replace line 5 with widgetStream.filter(a > ((Widget)a).getPrice() > 20.00).
  D. Replace line 4 with Stream widgetStream = widgets.stream();.