Oracle 1Z0-819 Exam Real Questions

Prepare and pass your Java SE 11 Developer with free 1Z0-819 exam questions.

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Total 515 Questions | Updated On: Oct 08, 2024

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Question 1

Given the code fragment:

Which statement at line 1 will print Ping Pong?

A :

B :

C :

D :

Answer: C

Question 2

Given:

It is required that if p instanceof Pair then p.isValid() returns true. Which is the smallest set of visibility changes to insure this requirement is met?

A : setLeft and setRight must be protected.

B : left and right must be private.

C : isValid must be public.

D : left, right, setLeft, and setRight must be private.

Answer: B

Question 3

Given:

Which annotation should be used to remove warnings from compilation?

A : @SuppressWarnings on the main and print methods

B : @SuppressWarnings(''unchecked'') on main and @SafeVarargs on the print method

C : @SuppressWarnings(''rawtypes'') on main and @SafeVarargs on the print method

D : @SuppressWarnings(''all'') on the main and print methods

Answer: B

Question 4

Given:

This code results in a compilation error. Which code should be inserted on line 1 for a successful compilation?

A : Consumer consumer = msg -> { return System.out.print(msg); };

B : Consumer consumer = var arg #> {System.out.print(arg);};

C : Consumer consumer = (String args) #> System.out.print(args);

D : Consumer consumer = System.out::print;

Answer: D

Question 5

Given the code fragment:

How many lines of text does this program print?

A : ur

B :

C : ree

D : o

Answer: D

Page: 1 / 103

Total 515 Questions | Updated On: Oct 08, 2024

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