1Z0-816 Online Practice Questions and Answers

Given the code fragment:

Path currentFile = Paths.get("/scratch/exam/temp.txt"); Path outputFile = Paths get("/scratch/exam/new.txt"); Path directory = Paths.get("/scratch/");

Files.copy(currentFile, outputFile); Files.copy(outputFile, directory); Files.delete (outputFile);

The /scratch/exam/temp.txt file exists. The /scratch/exam/new.txt and /scratch/new.txt files do not exist.

What is the result?

A. /scratch/exam/new.txt and /scratch/new.txt are deleted.

B. The program throws a FileaAlreadyExistsException.

C. The program throws a NoSuchFileException.

D. A copy of /scratch/exam/new.txt exists in the /scratch directory and /scratch/exam/new.txt is deleted.

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

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

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

Given:

What is the output?

A. null

B. A NoSuchElementException is thrown at run time.

C. Duke

D. A NullPointerException is thrown at run time.

Given: Which statement on line 1 enables this code to compile?

A. Function f = n -> n * 2;

B. Function f = n -> n * 2;

C. Function f = n -> n * 2;

D. Function f = n -> n * 2;

E. Function f = n -> n * 2;

Given:

Which is true?

A. System.out is the standard output stream. The stream is open only when System.out is called.

B. System.in cannot reassign the other stream.

C. System.out is an instance of java.io.OutputStream by default.

D. System.in is the standard input stream. The stream is already open.

Given:

and

Which code fragment on line 1 makes the s1 set contain the names of all employees born before January 1, 1989?

A. Option A

B. Option B

C. Option C

D. Option D

Given: Assume the file on path does not exist. What is the result?

A. The compilation fails.

B. /u01/work/filestore.txt is not deleted.

C. Exception

D. /u01/work/filestore.txt is deleted.

Which code is correct?

A. Runnable r = "Message" -> System.out.println();

B. Runnable r = () -> System.out::print;

C. Runnable r = () -> {System.out.println("Message");};

D. Runnable r = -> System.out.println("Message");

E. Runnable r = {System.out.println("Message")};

Given:

What is the output?

A. :APPLE:ORANGE:BANANA appleorangebanana

B. :APPLE:ORANGE:BANANA

C. APPLE:apple ORANGE:orange BANANA:banana

D. appleorangebanana :APPLE:ORANGE:BANANA

E. apple:APPLE orange:ORANGE banana:BANANA

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. Option A

B. Option B

C. Option C

D. Option D

Given: What is the result?

A. 6910 3

B. 10126 3

C. 3

D. 6104 3

Given the contents:

MessageBundle.properties file:

message=Hello

MessageBundle_en.properties file:

message=Hello (en)

MessageBundle_US.properties file:

message=Hello (US)

MessageBundle_en_US.properties file:

message=Hello (en_US)

MessageBundle_fr_FR.properties file:

message=Bonjour

and the code fragment:

Locale.setDefault(Locale.FRANCE);

Locale currentLocale = new Locale.Builder().setLanguage("en").build();

ResourceBundle messages = ResourceBundle.getBundle("MessageBundle", currentLocale);

System.out. println(messages.getString("message"));

Which file will display the content on executing the code fragment?

A. MessageBundle_en_US.properties

B. MessageBundle_en.properties

C. MessageBundle_fr_FR.properties

D. MessageBundle_US.properties

E. MessageBundle.properties

Given the code fragment:

var pool = Executors.newFixedThreadPool(5);

Future outcome = pool.submit(() -> 1);

Which type of lambda expression is passed into submit()?

A. java.lang.Runnable

B. java.util.function.Predicate

C. java.util.function.Function

D. java.util.concurrent.Callable

Which two statements set the default locale used for formatting numbers, currency, and percentages? (Choose two.)

A. Locale.setDefault(Locale.Category.FORMAT, "zh-CN");

B. Locale.setDefault(Locale.Category.FORMAT, Locale.CANADA_FRENCH);

C. Locale.setDefault(Locale.SIMPLIFIED_CHINESE);

D. Locale.setDefault("en_CA");

E. Locale.setDefault("es", Locale.US);

Given:

and checkQuality(QUALITY.A); and

Which code fragment can be inserted into the switch statement to print Best?

A. QUALITY.A.ValueOf()

B. A

C. A.toString()

D. QUALITY.A