Oracle 1Z0-816 Actual Free Exam Questions & Community Discussion

Exam Code/Number: 1Z0-816
Exam Name/Title: Java SE 11 Programmer II
Certification Provider: Oracle
Corresponding Certification: Java Platform Standard Edition 11

Exam Questions: 80
Updated On: Jul 08, 2026

Question #33

Which code fragment does a service use to load the service provider with a Print interface?

A. private Print print = com.service.Provider.getInstance();

B. private Print print = new com.service.Provider.PrintImpl();

C. private java.util.ServiceLoader<Print> loader = ServiceLoader.load (Print.class);

D. private java.util.ServiceLoader<Print> loader = new java.util.ServiceLoader<> ();

Discussion 0

Correct Answer: C Vote an answer

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Question #34

Given:

Which statement is equivalent to line 1?

A. double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).sum;

B. double totalSalary = list.stream().map(Employee::getSalary * ratio).reduce (bo).orElse(0.0);

C. double totalSalary = list.stream().mapToDouble(e -> e.getSalary() * ratio).reduce(starts, bo);

D. double totalSalary = list.stream().map(e -> e.getSalary() * ratio).reduce (bo).ifPresent (p -> p.doubleValue());

Discussion 0

Correct Answer: B Vote an answer

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Question #35

Which is a proper JDBC URL?

A. http://localhost.mysql.com:3306/database

B. jdbc:mysql://localhost:3306/database

C. jdbe.mysql.com://localhost:3306/database

D. http://localhost mysql.jdbc:3306/database

Discussion 0

Correct Answer: B Vote an answer

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Question #36

Given this enum declaration:

Examine this code:
System.out.println(Letter.values()[1]);
What code should be written at line 5 for this code to print 200?

A. public String toString() { return String.valueOf(Letter.values()[1]); }

B. String toString() { return "200"; }

C. public String toString() { return String.valueOf(ALPHA.v); }

D. public String toString() { return String.valueOf(v); }

Discussion 0

Correct Answer: D Vote an answer

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Question #37

Given:

Examine these requirements:
* Eliminate code duplication.
* Keep constant the number of methods other classes may implement from this interface.
Which method can be added to meet these requirements?

A. Option B

B. Option D

C. Option C

D. Option A

Discussion 0

Correct Answer: A Vote an answer

Question #38

A company has an existing sales application using a Java 8 jar file containing packages:
com.company.customer;
com.company.customer.orders;
com.company.customer.info;
com.company.sales;
com.company.sales.leads;
com.company.sales.closed;
com.company.orders;
com.company.orders.pending;
com.company.orders.shipped.
To modularize this jar file into three modules, customer, sales, and orders, which module-info.java would be correct?
A)

A. Option B

B. Option D

C. Option C

D. Option A

Discussion 0

Correct Answer: C Vote an answer

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Question #39

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

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Question #40

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

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