Oracle 1Z1-816 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1Z1-816
Exam Name/Title: Java SE 11 Programmer II
Certification Provider: Oracle
Corresponding Certification: Java Platform Standard Edition 11

Exam Questions: 80
Updated On: Jul 07, 2026

Question #1

var numbers = List.of(0,1,2,3,4,5,6,7,8,9);
You want to calculate the average of numbers. Which two codes will accomplish this? (Choose two.)

A. double avg = numbers.parallelStream().mapToInt (m -> m).average().getAsDouble ();

B. double avg = numbers.stream().mapToInt (i -> i).average().parallel();

C. double avg = numbers.stream().parallel().averagingDouble(a -> a);

D. double avg = numbers.stream().average().getAsDouble();

E. double avg = numbers.stream().collect(Collectors.averagingDouble(n -> n));

Discussion 0

Correct Answer: A,D Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Question #2

Given the code fragment:
Path source = Paths.get("/repo/a/a.txt");
Path destination = Paths.get("/repo");
Files.move(source, destination); // line 1
Files.delete (source); // line 2
Assuming the source file and destination folder exist, what Is the result?

A. A java.nio.file.NoSuchFileException is thrown on line 2.

B. A copy of /repo/a/a.txt is moved to the /repo directory and /repo/a/a.txt is deleted.

C. A java.nio.file.FileAlreadyExistsException is thrown on line 1.

D. a.txt is renamed repo.

Discussion 0

Correct Answer: B Vote an answer

Question #3

Given:
var fruits = List.of("apple", "orange", "banana", "lemon");
You want to examine the first element that contains the character n. Which statement will accomplish this?

A. Optional<String> result = fruits.stream().anyMatch(f -> f.contains("n"));

B. Optional<String> result = fruits.stream().filter(f -> f.contains ("n")).findFirst ();

C. fruits.stream().filter(f -> f.contains("n")).forEachOrdered(System.out::print);

D. String result = fruits.stream().filter(f -> f.contains("n")).findAny();

Discussion 0

Correct Answer: C Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Question #4

Given the declaration:

Examine this code fragment:
/* Loc1 */ class ProcessOrders { ... }
Which two annotations may be applied at Loc1 in the code fragment? (Choose two.)

A. @Resource(priority=0)

B. @Resource(priority=100)

C. @Resource(name="Customer1", priority=100)

D. @Resource

E. @Resource(name="Customer1")

Discussion 0

Correct Answer: A,B Vote an answer

Question #5

Given:

What is the output?

A. A NoSuchElementException is thrown at run time.

B. null

C. A NullPointerException is thrown at run time.

D. Duke

Discussion 0

Correct Answer: D Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Question #6

Given:

You want the code to produce this output:
John
Joe
Jane
Which code fragment should be inserted on line 1 and line 2 to produce the output?

A. Insert Comparable<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

B. Insert Comparator<Person> on line 1.
Insert
public int compareTo(Person person) {
return person.name.compareTo(this.name);
}
on line 2.

C. Insert Comparator<Person> on line 1.
Insert
public int compare(Person p1, Person p2) {
return p1.name.compare(p2.name);
}
on line 2.

D. Insert Comparator<Person> on line 1.
Insert
public int compare(Person person) {
return person.name.compare(this.name);
}
on line 2.

Discussion 0

Correct Answer: B Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Question #7

Which two safely validate inputs? (Choose two.)

A. Use trusted domain-specific libraries to validate inputs.

B. Delegate numeric range checking of values to the database.

C. Assume inputs have already been validated.

D. Modify the input values, as needed, to pass validation.

E. Accept only valid characters and input values.

Discussion 0

Correct Answer: B,E Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Question #8

Which two statements independently compile? (Choose two.)

A. List<? super Short> list = new ArrayList<Number>();

B. List<? super Number> list = new ArrayList<Integer>();

C. List<? super Float> list = new ArrayList<Double>();

D. List<? extends Number> list = new ArrayList<Byte>();

E. List<? extends Number> list = new ArrayList<Object>();

Discussion 0

Correct Answer: A,D Vote an answer

Explanation: Only visible for EduDump members. You can sign-up / login (it's free).

Download Free Oracle 1Z1-816 Demo

Simply submit your e-mail address below to get started with our free demo of your Oracle 1Z1-816 exam.