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Free 1Z0-809 Exam Questions with First Attempt Pass Assurance

Question 1

Consider the code of Test.java file:

1. package com.udayan.ocp;

3. class Player {

4. String name;

5. int age;

7. Player() {

8. this.name = "Yuvraj";

9. this.age = 36;

10. }

11.

12. public String toString() {

13. return name + ", " + age;

14. }

15.

16. public Class getClass() {

17. return super.getClass();

18. }

19. }

20.

21. public class Test {

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

23. System.out.println(new Player());

24. }

25. }

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

Options :

A : Compilation error

B : Yuvraj, 36

C : null, 0

D : Text containing @ symbol

Answer: A

Question 2

Given the code fragment:

Stream<Path> files = Files.list(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 and folders in the home directory are listed along with their attributes.

D : A compilation error occurs at line n2.

Answer: C

Question 3

Given code of Test.java file:

1. package com.udayan.ocp;

3. import java.util.Arrays;

4. import java.util.List;

5. import java.util.function.Predicate;

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 4

Given the code fragment:

public class FileThread implements Runnable {

String fName;

public FileThread(String fName) { this.fName = fName; }

public void run () System.out.println(fName);}

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

InterruptedException {

ExecutorService executor = Executors.newCachedThreadPool();

Stream<Path> listOfFiles = Files.walk(Paths.get(“Java Projects”));

listOfFiles.forEach(line -> {

executor.execute(new FileThread(line.getFileName().toString()));

line n1

});

executor.shutdown();

executor.awaitTermination(5, TimeUnit.DAYS); //

line n2

}

The Java Projects directory exists and contains a list of files.

What is the result?

Options :

A : The program throws a runtime exception at line n2.

B : The program prints files names concurrently

C : The program prints files names sequentially.

D : A compilation error occurs at line n1

Answer: B

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

3. public class Test {

4. private static void div(int i, int j) {

5. try {

6. System.out.println(i / j);

7. } catch(ArithmeticException e) {

8. throw (RuntimeException)e;

9. }

10. }

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

12. try {

13. div(5, 0);

14. } catch(ArithmeticException e) {

15. System.out.println("AE");

16. } catch(RuntimeException e) {

17. System.out.println("RE");

18. }

19. }

20. }

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

Options :

A : AE

B : RE

C : Compilation error

D : Program ends abruptly

Answer: A

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