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: Feb 20, 2025

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Question 1

Given code of Test.java file:

1. package com.udayan.ocp;

3. import java.util.*;

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. }

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 2

Given the code fragment:

List<String> empDetails = Arrays.asList(“100, Robin, HR”,

“200, Mary, AdminServices”,

“101, Peter, HR”);

empDetails.stream()

.filter(s-> s.contains(“1”))

.sorted()

.forEach(System.out::println); //line n1

What is the result?

A : 100, Robin, HR 101, Peter, HR

B : compilation error occurs at line n1.

C : 100, Robin, HR101, Peter, HR200, Mary, AdminServices

D : 100, Robin, HR200, Mary, AdminServices101, Peter, HR

Answer: A

Question 3

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

and the code fragment:

What is the result?

A : Engine.java file fails to compile

B : EngineOperator.java file fails to compile

C : Operator.java file fails to compile

D : OFF

Answer: A

Question 4

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!?

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

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

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

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

Answer: B

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

3. import java.time.*;

5. public class Test {

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

7. System.out.println(Duration.ofDays(-2));

8. }

9. }

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

A : PT48H

B : P-2D

C : P2D

D : PT-48H

Answer: D

Page: 1 / 94

Total 469 Questions | Updated On: Feb 20, 2025

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