Online 1Z0-809 Practice Test

Question 1

Assume that proper import statements are available, and 'fr' is the language code for French language.

And you have the following code snippet:

Locale [] loc = Locale.getAvailableLocales();

Which of the following statements will print all the supported (by the JVM) French Language Locale on to the console?

Select 2 options.

Options :

A : Arrays.stream(loc).filter(x -> x.getLanguage().contains("FR")).forEach(System.out::println);

B : Arrays.stream(loc).filter(x -> x.toString().contains("FR")).forEach(System.out::println);

C : Arrays.stream(loc).filter(x -> x.getLanguage().equals("fr")).forEach(System.out::println);

D : Arrays.stream(loc).filter(x -> x.toString().startsWith("fr")).forEach(System.out::println);

E : Arrays.stream(loc).filter(x -> x.startsWith("fr")).forEach(System.out::println);

Answer: C,D

Question 2

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.*;

4.

5. public class Test {

6. public static void main(String[] args) {

7. NavigableMap map = new TreeMap<>();

8. map.put(25, "Pune");

9. map.put(32, "Mumbai");

10. map.put(11, "Sri Nagar");

11. map.put(39, "Chennai");

12.

13. System.out.println(map.headMap(25, true));

14. }

15. }

Options :

A : {25=Pune, 32=Mumbai, 39=Chennai}

B : {32=Mumbai, 39=Chennai}

C : {11=Sri Nagar, 25=Pune}

D : {11=Sri Nagar}

Answer: C

Question 3

Given the code fragment:

Stream<Path> files = Files.walk(Paths.get(System.getProperty(“user.home”)));

files.forEach (fName -> { //line n1

try {

Path aPath = fName.toAbsolutePath(); //line n2

System.out.println(fName + “:”

+ Files.readAttributes(aPath,

Basic.File.Attributes.class).creationTime

());

} catch (IOException ex) {

ex.printStackTrace();

});

What is the result?

Options :

A : All files and directories under the home directory are listed along with their attributes

B : A compilation error occurs at line n1.

C : The files in the home directory are listed along with their attributes

D : A compilation error occurs at line n2.

Answer: A

Question 4

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.Arrays;

4. import java.util.List;

5. import java.util.function.Predicate;

6.

7. public class Test {

8. public static void main(String[] args) {

9. List list = Arrays.asList(-80, 100, -40, 25, 200);

10. Predicate predicate = num -> {

11. int ctr = 1;

12. boolean result = num > 0;

13. System.out.print(ctr++ + ".");

14. return result;

15. };

16.

17. list.stream().filter(predicate).findFirst();

18. }

19. }

What will be the result of compiling and executing Test class?

Options :

A : Nothing is printed on to the console.

B : 1.

C : 1.1.1.1.1.

D : 1.1.

E : 1.2.

F : 1.2.3.4.5.

Answer: D

Question 5

Given:

class FuelNotAvailException extends Exception { }

class Vehicle {

void ride() throws FuelNotAvailException { //line n1

System.out.println(“Happy Journey!”);

}

class SolarVehicle extends Vehicle {

public void ride () throws Exception { //line n2

super ride ();

}

and the code fragment:

public static void main (String[] args) throws FuelNotAvailException, Exception

{

Vehicle v = new SolarVehicle ();

v.ride();

}

Which modification enables the code fragment to print Happy Journey!?

Options :

A : Replace line n1 with public void ride() throws FuelNotAvailException {

B :

Replace line n1 with protected void ride() throws Exception {

C : Replace line n2 with void ride() throws Exception {

D : Replace line n2 with private void ride() throws FuelNotAvailException {

Answer: B

EXPERTY DESIGNED 1Z0-809 PRACTICE TEST