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 06, 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 the code fragment:

List<String> colors = Arrays.asList(“red”, “green”, “yellow”);

Predicate<String> test = n - > {

System.out.println(“Searching…”);

return n.contains(“red”);

};

colors.stream()

.filter(c -> c.length() >= 3)

.allMatch(test);

What is the result?

A : Searching…

B : Searching…Searching…

C : Searching…Searching…Searching…

D : A compilation error occurs.

Answer: C

Question 3

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 4

Given:

class UserException extends Exception { }

class AgeOutOfLimitException extends UserException { }

and the code fragment:

class App {

public void doRegister(String name, int age)

throws UserException, AgeOutOfLimitException {

if (name.length () < 6) {

throw new UserException ();

} else if (age >= 60) {

throw new AgeOutOfLimitException ();

} else {

System.out.println(“User is registered.”);

}

public static void main(String[ ] args) throws UserException {

App t = new App ();

t.doRegister(“Mathew”, 60);

}

What is the result?

A : User is registered.

B : An AgeOutOfLimitException is thrown.

C : A UserException is thrown.

D : A compilation error occurs in the main method.

Answer: B

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

3. public class Test {

4. private static String msg = "Hello";

6. private static String changeMsg(String m) {

7. msg = m;

8. return null;

9. }

10.

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

12. if(args.length == 0) {

13. assert false : changeMsg("Bye");

14. }

15. System.out.println(msg);

16. }

17. }

What will be the result of executing Test class with below command?

java -ea com.udayan.ocp.Test

A : Bye

B : Hello

C : AssertionError is thrown at runtime and program terminates abruptly

Answer: C

Page: 1 / 94

Total 469 Questions | Updated On: Jan 06, 2026

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