Online 1Z0-809 Practice Test

Question 1

Given:

and the code fragment:

What is the result?

Options :

A :

A compilation error occurs at line n2.

B :

A compilation error occurs because the try block doesn’t have a catch or finally block.

C : A compilation error occurs at line n1.

D :

The program compiles successfully.

Answer: B

Question 2

Given the code fragment:

9. Connection conn = DriveManager.getConnection(dbURL, userName, passWord);

10. String query = “SELECT id FROM Employee”;

11. try (Statement stmt = conn.createStatement()) {

12. ResultSet rs = stmt.executeQuery(query);

13. stmt.executeQuery(“SELECT id FROM Customer”);

14. while (rs.next()) {

15. //process the results

16. System.out.println(“Employee ID: “+ rs.getInt(“id”));

17. }

18. } catch (Exception e) {

19. System.out.println (“Error”);

20. }

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 Error

D : compilation fails on line 13.

Answer: C

Question 3

Given the code fragment:

Path p1 = Paths.get(“/Pics/MyPic.jpeg”);

System.out.println (p1.getNameCount() +

“:” + p1.getName(1) +

“:” + p1.getFileName());

Assume that the Pics directory does NOT exist.

What is the result?

Options :

A : An exception is thrown at run time

B : 2:MyPic.jpeg: MyPic.jpeg

C : 3:.:MyPic.jpeg

D : 2:Pics: MyPic.jpeg

Answer: B

Question 4

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

1. package com.udayan.ocp;

2.

3. class M {

4. private int num1 = 100;

5. class N {

6. private int num2 = 200;

7. }

8.

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

10. M outer = new M();

11. M.N inner = outer.new N();

12. System.out.println(outer.num1 + inner.num2);

13. }

14. }

Options :

A : 300

B : 200

C : Compilation error

D : 100

Answer: A

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.util.Arrays;

4. import java.util.Comparator;

5. import java.util.List;

6.

7. public class Test {

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

9. List list = Arrays.asList(10, 20, 8);

10.

11. System.out.println(list.stream().max(Comparator.comparing(a -> a)).get()); //Line 1

12.

13. System.out.println(list.stream().max(Integer::compareTo).get()); //Line 2

14.

15. System.out.println(list.stream().max(Integer::max).get()); //Line 3

16. }

17. }

Which of the following statement is true?

Options :

A : Line 1 and Line 3 print same output

B : Line 2 and Line 3 print same output

C : Line 1 and Line 2 print same output

D : Line 1, Line 2 and Line 3 print same output

Answer: C

EXPERTY DESIGNED 1Z0-809 PRACTICE TEST