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: Aug 01, 2026
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Question 1

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.*;

4.  

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. }


Answer: C
Question 2

Below is the code of Test.java file:

1. package com.udayan.ocp;

2.  

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!?


Answer: A,C
Question 3

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.stream.Stream;

4.  

5. public class Test {

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

7.         Stream stream = Stream.of("d", "cc", "bbb", "aaaa");

8.         stream.sorted().forEach(System.out::println);

9.     }

10. }

Which of the following needs to be done, so that output is: 

d

cc

bbb

aaaa


Answer: B
Question 4

Given code of Test.java file:

1. package com.udayan.ocp;

2.  

3. interface Printer1 {

4.     default void print() {

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

6.     }

7. }

8.  

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?


Answer: D
Question 5

Which of the following code will create/return a Locale object for the JVM, on which your code is running?



Answer: B
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Total 469 Questions | Updated On: Aug 01, 2026
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