1z0-816 sample questions

Question 1

Which two statements correctly describe capabilities of interfaces and abstract classes? (Choose two.)

Accepted Answer

Interfaces cannot have protected methods but abstract classes can.

Accepted Answer

Interfaces cannot have instance fields but abstract classes can.

Answer

Both interfaces and abstract classes can have final methods.

Answer

Interfaces cannot have static methods but abstract classes can.

Answer

Interfaces cannot have methods with bodies but abstract classes can.

Question 2

Given:

Which statement is equivalent to line 1?

Accepted Answer

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

Answer

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

Answer

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

Answer

double totalsalary = list.stream().mapToDouble(e -> e.getSalaryQ * ratio).reduce(starts, bo);

Question 3

Given:

After which line can we insert assert i < 0 || values[i] <= values[i + 1]; to verify that the values array is partially sorted?

Accepted Answer

after line 6

Answer

after line 8

Answer

after line 5

Answer

after line 10

Question 4

Which is a proper JDBC URL?

Accepted Answer

dbc:mysql://localhost:3306/database

Answer

dbe.mysql.com://localhost:3306/database

Answer

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

Answer

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

Question 5

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

Accepted Answer

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

Answer

private Print print = com.service.Provider.getlnstance();

Answer

private java.util.ServiceLoader loader - new java.util.ServiceLoader ();

Answer

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

Question 6

Given:

You want to obtain the Stream object on reading the file.

Which code inserted on line 1 will accomplish this?

Accepted Answer

var lines = Files.readAIILines(Paths.get(INPUT_FILE_NAME));

Answer

var lines = Files.lines(Paths.get(INPUT_FILE_NAME));

Answer

stream lines = Files.readAIILines(Paths.get(INPUT_FILE_NAME));

Answer

Stream lines = Files.lines(INPUT_FILE_NAME);

Free 1z0-816 sample questions