Free Practice Oracle 1Z0-809 Exam Questions 2025

Stay ahead with 100% Free Java SE 8 Programmer II 1Z0-809 Dumps Practice Questions

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Total 469 Questions | Updated On: Jun 03, 2025

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Question 1

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 2

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?

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

Question 3

Given the code fragment:

Stream<Path> files = Files.walk(Paths.get(System.getProperty(“user.home”)));

files.forEach (fName -> { //line n1

try {

Path aPath = fName.toAbsolutePath(); //line n2

System.out.println(fName + “:”

+ Files.readAttributes(aPath,

Basic.File.Attributes.class).creationTime

());

} catch (IOException ex) {

ex.printStackTrace();

});

What is the result?

A : All files and directories under the home directory are listed along with their attributes

B : A compilation error occurs at line n1.

C : The files in the home directory are listed along with their attributes

D : A compilation error occurs at line n2.

Answer: A

Question 4

Given:

From what threading problem does the program suffer?

A : race condition

B : deadlock

C : starvation

D : livelock

Answer: B

Question 5

Given code of Test.java file:

1. package com.udayan.ocp;

3. public class Test {

4. private static String msg = "Hello";

6. private static String changeMsg(String m) {

7. msg = m;

8. return null;

9. }

10.

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

12. if(args.length == 0) {

13. assert false : changeMsg("Bye");

14. }

15. System.out.println(msg);

16. }

17. }

What will be the result of executing Test class with below command?

java -ea com.udayan.ocp.Test

A : Bye

B : Hello

C : AssertionError is thrown at runtime and program terminates abruptly

Answer: C

Page: 1 / 94

Total 469 Questions | Updated On: Jun 03, 2025

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