EXPERTY DESIGNED 1Z0-809 PRACTICE TEST

Oracle 1Z0-809 Exam Questions
Total Questions: 469
Java SE 8 Programmer II
Updated On: Nov 10, 2025
Page : 1-47
Question 1

Given the code fragment:

Untitled1-page69-image50
You have been asked to define the ProductCode class. The definition of the ProductCode class must
allow c1 instantiation to succeed and cause a compilation error on c2 instantiation.
Which definition of ProductCode meets the requirement?

Options :
Answer: B

Question 2

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

1. package com.udayan.ocp;

2.  

3. class X {

4.     class Y {

5.         private void m() {

6.             System.out.println("INNER");

7.         }

8.     }

9.     

10.     public void invokeInner() {

11.         Y obj = new Y(); //Line 9

12.         obj.m(); //Line 10

13.     }

14. }

15.  

16. public class Test {

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

18.         new X().invokeInner();

19.     }

20. }

Options :
Answer: C

Question 3

You want to create a singleton class by using the Singleton design pattern. Which two statements enforce the singleton nature of the design? (Choose two.)

Options :
Answer: A,B

Question 4

Untitled1-page69-image65

What is the result?

Options :
Answer: A

Question 5

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

1. package com.udayan.ocp;

2.  

3. class M {

4.     private int num1 = 100;

5.     class N {

6.         private int num2 = 200;

7.     }

8.     

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. }

Options :
Answer: A

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