Oracle 1Z0-819 Online Practice Questions and Exam Preparation

Oracle 1Z0-819 Online Questions & Answers

• Question 301:

  Given:

  

  What is the result?

  A. 5
  B. 3
  C. 15
  D. 25
  E. 11
  C. 15

• Question 302:

  Given:

  class Animal { }

  class Dog extends Animal { }

  class Petdog extends Dog { }

  and

  

  Which two statements inserted independently on line 3 will make this code compile? (Choose two.)

  A. return new House();
  B. return new House();
  C. return new House();
  D. return new House();
  E. return new House();
  B. return new House();
  C. return new House();

• Question 303:

  Given the code fragment:

  

  What is the output?

  A. null
  B. 41 def 42
  C. An exception is thrown at runtime.
  D. def 42
  C. An exception is thrown at runtime.

• Question 304:

  Given these two classes:

  

  And given this fragment:

  

  Which describes the fragment?

  A. It throws IllegalMonitorStateException.
  B. It is subject to deadlock.
  C. It is subject to livelock.
  D. The code does not compile.
  B. It is subject to deadlock.

• Question 305:

  Why would you choose to use a peek operation instead of a forEach operation on a Stream?

  A. to process the current item and return void
  B. to remove an item from the end of the stream
  C. to process the current item and return a stream
  D. to remove an item from the beginning of the stream
  C. to process the current item and return a stream

• Question 306:

  Given the directory structure:

  

  and

  

  What is the result?

  A. /continent/country/state
  B. /continent/country/state/county
  C. /continent /continent/country
  D. /continent/ /continent/country /continent/country/state /continent/country/state/county
  C. /continent /continent/country

• Question 307:

  Given the code fragment:

  

  You must define the A exception class. The program execution must be terminated if the condition at line 19 is true and an a exception is thrown at line 20. Which code fragment at line n1 defines A as per the requirement?

  A. Class A extends Exception {
  B. Class A extends RuntimeException {
  C. Class A extends Throwable {
  D. Class A extends ArithmeticException {
  A. Class A extends Exception {

• Question 308:

  Given:

  

  Assuming that this code compiles correctly, which three statements are true? (Choose three.)

  A. A cannot be abstract.
  B. A cannot be final.
  C. B cannot be abstract.
  D. B cannot be final.
  E. B is a subtype of A.
  F. A is A is a subtype of B.a subtype of B.
  B. A cannot be final.
  C. B cannot be abstract.
  E. B is a subtype of A.

• Question 309:

  Given:

  

  Which two lines inserted in line 1 will allow this code to compile? (Choose two.)

  A. protected void walk(){}
  B. void walk(){}
  C. abstract void walk();
  D. private void walk(){}
  E. public abstract void walk();
  A. protected void walk(){}
  E. public abstract void walk();

• Question 310:

  Given: Which statement is true?

  

  A. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.
  B. All classes from the package java.time. are loaded for the class Diary.
  C. Only LocalDate class from java.time package is loaded.
  D. Tester must import java.time.LocalDate in order to compile.
  A. Class Tester does not need to import java.time.LocalDate because it is already visible to members of the package test.