Free 1z1-819 Questions for Oracle 1z1-819 Exam

Question #1

Given:
List<String> longlist = List.of("Hello","World","Beat");
List<String> shortlist = new ArrayList<>();
Which code fragment correctly forms a short list of words containing the letter "e"?

A. Option B

B. Option A

C. Option D

D. Option C

Discussion 0

Correct Answer: C Vote an answer

Question #2

Given:

What is the result?

A. Take extra care

B. Take extra care
Take extra care

C. The program prints nothing.

D. An exception is thrown at runtime

Discussion 0

Correct Answer: D Vote an answer

Question #3

Which statement about access modifiers is correct?

A. An inner class cannot be declared with the public modifier.

B. An interface can be declared with the protected modifier.

C. An abstract method can be declared with the private modifier.

D. An instance variable can be declared with the static modifier.

E. A local variable can be declared with the final modifier.

Discussion 0

Correct Answer: E Vote an answer

Question #4

Given:

executed using command:
java Hello "Hello World" Hello World
What is the output?

A. HelloHello WorldHelloWorld

B. An exception is thrown at runtime.

C. Hello WorldHello World

D. Hello WorldHelloWorld

E. Hello World Hello World

Discussion 0

Correct Answer: E Vote an answer

Question #5

Given:
LocalDate d1 = LocalDate.of(1997,2,7);
DateTimeFormatter dtf =
DateTimeFormatter.ofPattern( /*insert code here*/ );
System.out.println(dtf.format (d1));
Which pattern formats the date as Friday 7th of February 1997?

A. "eeee d+"th of"+ MMMM yyyy"

B. "eeee d'th of' MMMM yyyy"

C. "eeee dd'th of' MMM yyyy"

D. "eeee dd+"th of"+ MMM yyyy"

Discussion 0

Correct Answer: B Vote an answer

Question #6

Given the code fragment:
Which two code snippets inserted independently inside print method print Mondial: domainmodal?

A. new Main (} .prefix + new Main().name

B. Main.prefix + Main.name

C. prefix + name

D. prefix + Main, name

E. prefix + getName

F. Main.prefix + Main.getName()

Discussion 0

Correct Answer: A,D Vote an answer

Question #7

Given:

Which would cause s to be AQCD?

A. s.replace(s.indexOf("A"), s.indexOf("B"), "Q");

B. s.replace(s.indexOf("B"), s.indexOf("C"), "Q");

C. s.replace(s.indexOf("A"), s.indexOf("C"), "Q");

D. s.replace(s.indexOf("B"), s.indexOf("B"), "Q");

Discussion 0

Correct Answer: B Vote an answer

Question #8

Given:

What is the result?

A. nothing

B. 0

C. 0 4 9

D. 10

Discussion 0

Correct Answer: A Vote an answer

Question #9

Given:

What is the result?

A. An IndexOutOfBoundsException is thrown at runtime.

B. is it 0

C. this is it 3

D. is it 1

E. this is it 2

Discussion 0

Correct Answer: E Vote an answer

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Question #10

Given the code fragment from Box. Java:

Given the code fragment from item.java:

Given the information:
The classes Box and items are encapsulated with getters and setters methods. The classes Box and Item contains required constructors source code.
and the code fragment:

Which action serializes the b1 object?

A. Override readObject () and writeObject () method in the Book class.

B. Remove out.flush () method invocation.

C. Implement the Serializable interface in the item class.

D. Handle NoteSerilaizeableException in the try clause or throw in the main() method definition.

E. Add SerialVersionID to the Box and item class

Discussion 0

Correct Answer: C Vote an answer

Question #11

Given the code fragment:

Which code fragment replaces the for statement?

A. IntStream.range(1, 100).mapToObj(FizzBuzz::convert).forEach(System.out::println);

B. IntStream.rangeClosed(l, 100).map(FizzBuzz::convert).forEach(System.out::println);

C. IntStream.ranged, 100).map(FizzBuzz::convert).forEach(System.out::println);

D. intstream.rangeclosed(l, 100).mapToObj{FizzBuzz::convert).forEach(System.out::printIn);

Discussion 0

Correct Answer: B Vote an answer

Question #12

Given:
List<String> list1 = new ArrayList<>();
list1.add("A");
list1.add("B");
List list2 = List.copyOf(list1);
list2.add("C");
List<List<String>> list3 = List.of(list1, list2);
System.out.println(list3);
What is the result?

A. [[A, B], [A, B, C]]

B. An exception is thrown at run time.

C. [[A, B, C], [A, B, C]]

D. [[A, B],[A, B]]

Discussion 0

Correct Answer: B Vote an answer

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Question #13

Given the code fragment:

You want to validate a path name before the read file. Before validation, all path names should be canonicalized.
Which code inserted on line nl will accomplish this?

A.