EXPERTY DESIGNED 1Z0-809 PRACTICE TEST

Oracle 1Z0-809 Exam Questions
Total Questions: 469
Java SE 8 Programmer II
Updated On: Dec 07, 2025
Page : 1-47
Question 1

Given code of Test.java file: 

1. package com.udayan.ocp;

2.  

3. import java.util.Arrays;

4. import java.util.Comparator;

5. import java.util.List;

6.  

7. public class Test {

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

9.         List list = Arrays.asList(10, 20, 8);

10.         

11.         System.out.println(list.stream().max(Comparator.comparing(a -> a)).get()); //Line 1

12.  

13.         System.out.println(list.stream().max(Integer::compareTo).get()); //Line 2

14.  

15.         System.out.println(list.stream().max(Integer::max).get()); //Line 3

16.     }

17. }

Which of the following statement is true?

Options :
Answer: C

Question 2

Given code of Test.java file: 

package com.udayan.ocp;

import java.util.concurrent.*;

public class Test {

    public static void main(String[] args) throws InterruptedException, ExecutionException {

        ExecutorService es = Executors.newSingleThreadExecutor();

        Future f = es.submit(() -> "HELLO");

        System.out.println(f.get());

        es.shutdown();

    }

}

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

Options :
Answer: B

Question 3

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?

Options :
Answer: D

Question 4

Given the code fragment:
Untitled1-page69-image35
What is the result?

Options :
Answer: A

Question 5

Given:

3
and the code fragment:
4
What is the result?

Options :
Answer: B

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