Free Oracle 1Z0-809 Exam Questions

Become Oracle Certified with updated 1Z0-809 exam questions and correct answers

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Total 469 Questions | Updated On: Jan 15, 2026

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Question 1

Given:

and the code fragment:

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

TruckCarBike?

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

Question 2

Given code of Test.java file:

1. package com.udayan.ocp;

3. interface Printer1 {

4. default void print() {

5. System.out.println("Printer1");

6. }

7. }

9. class Printer2 {

10. public void print() {

11. System.out.println("Printer2");

12. }

13. }

14.

15. class Printer extends Printer2 implements Printer1 {

16.

17. }

18.

19. public class Test {

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

21. Printer printer = new Printer();

22. printer.print();

23. }

24. }

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

A : Printer1

B : Compilation error for Printer1

C : Compilation error for Printer

D : Printer2

E : Compilation error for Printer2

Answer: D

Question 3

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?

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 4

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.ListIterator;

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?

A : IF

B : RIF

C : Runtime Exception

Answer: B

Question 5

Given the content of Operator.java, EngineOperator.java, and Engine.java files:

and the code fragment:

What is the result?

A : The Engine.java file fails to compile

B : The EngineOperator.java file fails to compile

C : The Operator.java file fails to compile

D : ON OFF

Answer: A

Page: 1 / 94

Total 469 Questions | Updated On: Jan 15, 2026

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