Question 1

Given code of Test.java file:

1. package com.udayan.ocp;

2.

3. import java.time.*;

4.

5. public class Test {

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

7. System.out.println(Duration.ofDays(-2));

8. }

9. }

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

Options :

A : PT48H

B : P-2D

C : P2D

D : PT-48H

Answer: D

Question 2

Given the code fragment:

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 :

A :

B :

C :

D :

Answer: B

Question 3

Given the code fragment:

Assume that:

The required database driver is configured in the classpath.

The appropriate database is accessible with the dbURL, userName, and passWord exists

The Employee table has a column ID of type integer and the SQL query matches one record.

What is the result?

Options :

A :

Compilation fails at line 14.

B :

Compilation fails at line 15.

C :

The code prints the employee ID.

D : The code prints Error.

Answer: A

Question 4

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 :

A : Compilation error at Line 9 as instance of outer class (X) is needed to create the instance of inner class (Y)

B : Compilation error at Line 10 as private method m() cannot be invoked outside the body of inner class (Y)

C : INNER

D : Exception is thrown at runtime

Answer: C

Question 5

Given the code fragment:

Assume that:

The required database driver is configured in the classpath.

The appropriate database is accessible with the dbURL, userName, and passWord exists.

The Employee and Customer tables are available and each table has id column with a few records and

the SQL queries are valid.

What is the result of compiling and executing this code fragment?

Options :

A : The program prints employee IDs.

B : The program prints customer IDs.

C : The program prints Exception.

D : compilation fails on line 13.

Answer: C

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