Most Recent Oracle 1Z0-809 Exam Questions & Answers

Prepare for the Oracle Java SE 8 Programmer II exam with our extensive collection of questions and answers. These practice Q&A are updated according to the latest syllabus, providing you with the tools needed to review and test your knowledge.

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The questions for 1Z0-809 were last updated on Nov 22, 2024.

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Question No. 1

Given the code fragments:

and

What is the result?

Anull

BA compilation error occurs.

CDogCatMouse

D[Dog, Cat, Mouse]

Show Answer

Correct Answer: D

Question No. 2

Given the code fragment:

List codes = Arrays.asList (10, 20);

UnaryOperator uo = s -> s +10.0;

codes.replaceAll(uo);

codes.forEach(c -> System.out.println(c));

What is the result?

A20.030.0

B1020

CA compilation error occurs.

DA NumberFormatException is thrown at run time.

Show Answer

Correct Answer: C

Question No. 3

Given:

and the code fragment:

What is the result?

A[Java EE: Helen:Houston][Java ME: Jessy:Chicago, Java ME: Mark:Chicago]

BJava EEJava ME

C[Java ME: Jessy:Chicago, Java ME: Mark:Chicago][Java EE: Helen:Houston]

DA compilation error occurs.

Show Answer

Correct Answer: D

Question No. 4

The dat

a.doc, data.txt and data.xml files are accessible and contain text.

Given the code fragment:

Stream paths = Stream.of (Paths. get(''data.doc''),

Paths. get(''data.txt''),

Paths. get(''data.xml''));

paths.filter(s-> s.toString().endWith(''txt'')).forEach(

s -> {

try {

Files.readAllLines(s)

.stream()

.forEach(System.out::println); //line n1

} catch (IOException e) {

System.out.println(''Exception'');

}

);

What is the result?

AThe program prints the content of data.txt file.

BThe program prints:Exception<<The content of the data.txt file>>Exception

CA compilation error occurs at line n1.

DThe program prints the content of the three files.

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Correct Answer: A

Question No. 5

Which code fragment is required to load a JDBC 3.0 driver?

AConnection con = Connection.getDriver(''jdbc:xyzdata://localhost:3306/EmployeeDB'');

BClass.forName(''org.xyzdata.jdbc.NetworkDriver'');

CConnection con = DriverManager.getConnection(''jdbc:xyzdata://localhost:3306/EmployeeDB'');

DDriverManager.loadDriver (''org.xyzdata.jdbc.NetworkDriver'');

Show Answer

Correct Answer: B

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