Oracle Oracle Certifications 1Z0-819 Questions & Answers

• Question 291:

  Given:

  

  Which three statements cause a compiler error when inserted at line l? (Choose three.)

  A. int i = theInstance.three++;

  B. int b = two;

  C. int c = three;

  D. int a = one++;

  E. int f = ExampleInterface.three;

  F. int h = theInstance.two;

  G. int e = ExampleInterface.two++;

  H. int a = ExampleInterface.one;

  I. int g = theInstance.one;

  Correct Answer: ADG

• Question 292:

  Given:

  

  Which two code fragments remove the elements from the original list? (Choose two.)

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: AC

• Question 293:

  Given these two classes:

  

  And given this fragment:

  

  Which describes the fragment?

  A. It throws an IllegalMonitorStateException.

  B. It is subject to deadlock.

  C. It is subject to livelock.

  D. The code does not compile.

  Correct Answer: B

• 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

  Correct Answer: A

• Question 295:

  Given:

  

  Which statement is true?

  A. The code prints 10.

  B. The code fails to compile at line n2.

  C. The code fails to compile at line n1.

  D. The code fails to compile at line n4.

  E. The code fails to compile at line n3.

  F. The code prints 100.

  Correct Answer: C

• Question 296:

  Given:

  

  Which action will enable the code to compile?

  A. Replace line 6 with BiFunction func = x -> y -> x * y;

  B. Replace line 6 with Function func = x -> y -> x * y;

  C. Replace line 6 with IntFunction func = x -> y -> x * y;

  Correct Answer: C

• Question 297:

  Given:

  

  Which statement on line 1 enables the Test class to compile?

  A. if(p.test(number)) {

  B. if(p.apply(number)) {

  C. if(p.get(number)) {

  D. if(p.accept(number)) {

  Correct Answer: A

• Question 298:

  Which module is required for any application using Swing or AWT?

  A. java.desktop

  B. java.prefs

  C. java.se

  D. java.logging

  E. java.rmi

  Correct Answer: A

• Question 299:

  Given:

  

  To secure this code, you want to make sure that the client code cannot modify the public static fields. Which code will accomplish this?

  

  A. Option A

  B. Option B

  C. Option C

  D. Option D

  Correct Answer: C

• Question 300:

  Given:

  

  and

  

  What is the result?

  A. test:null

  B. test:1

  C. A ClassCastException is thrown at runtime.

  D. null:null

  E. The compilation fails.

  Correct Answer: E