Online 1Z0-809 Practice Test

Question 1

Given the code fragment:

Assume that:

The required database driver is configured in the classpath.

The appropriate database is accessible with the dbURL, userName, and passWord exists.

The Employee and Customer tables are available and each table has id column with a few records and

the SQL queries are valid.

What is the result of compiling and executing this code fragment?

Options :

A : The program prints employee IDs.

B : The program prints customer IDs.

C : The program prints Exception.

D : compilation fails on line 13.

Answer: C

Question 2

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.ListIterator;

6.

7. public class Test {

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

9. List list = Arrays.asList("T", "S", "R", "I", "F");

10. ListIterator iter = list.listIterator(2);

11. while(iter.hasNext()) {

12. System.out.print(iter.next());

13. }

14. }

15. }

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

Options :

A : IF

B : RIF

C : Runtime Exception

Answer: B

Question 3

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 4

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.ArrayDeque;

4. import java.util.Deque;

5.

6. public class Test {

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

8. Deque deque = new ArrayDeque<>();

9. deque.push(new Boolean("abc"));

10. deque.push(new Boolean("tRuE"));

11. deque.push(new Boolean("FALSE"));

12. deque.push(true);

13. System.out.println(deque.pop() + ":" + deque.peek() + ":" + deque.size());

14. }

15. }

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

Options :

A : true:false:3

B : true:true:3

C : false:true:3

D : false:false:3

Answer: A

Question 5

Given:

and the code fragment:

Which two code fragments, when inserted at line n1 independently, enable the code to print

TruckCarBike?

Options :

A : .sorted ((v1, v2) -> v1.getVId() < v2.getVId())

B : .sorted (Comparable.comparing (Vehicle: :getVName)).reversed ()

C :

.map (v -> v.getVid())

.sorted ()

D : .sorted((v1, v2) -> Integer.compare(v1.getVId(), v2.getVid()))

E : .sorted(Comparator.comparing ((Vehicle v) -> v.getVId()))

Answer: A,D

EXPERTY DESIGNED 1Z0-809 PRACTICE TEST