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: Mar 19, 2026

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Question 1

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

1. package com.udayan.ocp;

3. class M {

4. private int num1 = 100;

5. class N {

6. private int num2 = 200;

7. }

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. }

A : 300

B : 200

C : Compilation error

D : 100

Answer: A

Question 2

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 3

Below is the code of Test.java file:

1. package com.udayan.ocp;

3. class Outer {

4. static class Inner {

5. static void greetings(String s) {

6. System.out.println(s);

7. }

8. }

9. }

10.

11. public class Test {

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

13. /*INSERT*/

14. }

15. }

Which of the following 2 options can replace /*INSERT*/ such that there on executing class Test, output is: HELLO!?

A : Outer.Inner inner2 = new Outer.Inner();inner2.greetings("HELLO!");

B : Inner.greetings("HELLO!");

C : Outer.Inner.greetings("HELLO!");

D : Outer.Inner inner1 = new Outer().new Inner();inner1.greetings("HELLO!");

Answer: A,C

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

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

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

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

Answer: B

Question 5

Given code of Test.java file:

package com.udayan.ocp;

import java.util.Arrays;

import java.util.List;

public class Test {

public static void main(String[] args) {

List list = Arrays.asList("A", "E", "I", "O");

list.add("U");

list.forEach(System.out::print);

}

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

A : AEIOU

B : Runtime exception

C : Compilation error

D : UAEIO

E : AEIO

Answer: B

Page: 1 / 94

Total 469 Questions | Updated On: Mar 19, 2026

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