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1z0-808 Oracle Java SE 8 Programmer I Free Practice Exam Questions (2025 Updated)

Prepare effectively for your Oracle 1z0-808 Java SE 8 Programmer I certification with our extensive collection of free, high-quality practice questions. Each question is designed to mirror the actual exam format and objectives, complete with comprehensive answers and detailed explanations. Our materials are regularly updated for 2025, ensuring you have the most current resources to build confidence and succeed on your first attempt.

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Total 224 questions

Given:

What is the result?

A.

null:null:0.0

B.

null:null

C.

<>:0.0

D.

null:0.0

Given the code fragment:

What is the result?

A.

3142

B.

2413

C.

1324

D.

4231

Given:

And given the code fragment:

What is the result?

A.

4W 100 Auto4W 150 Manual

B.

null 0 Auto4W 150 Manual

C.

Compilation fails only at line n1

D.

Compilation fails only at line n2

E.

Compilation fails at both line n1 and line n2

Given the code fragment:

Which three code fragments can be independently inserted at line n1 to enable the code to print One? (Choose three.)

A.

byte x = 1;

B.

short x = 1;

C.

String x = "1";

D.

long x = 1;

E.

double x = 1;

F.

Integer x = new Integer("1");

Given the code fragment:

What is the result?

A.

An exception is thrown at runtime.

B.

07-31-2014

C.

2014-07-31

D.

2014-09-30

Given:

What is the result?

A.

nullRichardDonald

B.

RichardDonald

C.

Compilation fails.

D.

An ArrayIndexOutOfBoundsException is thrown at runtime.

E.

A NullPointerException is thrown at runtime.

Given:

What is the result?

A.

int main 1

B.

Object main 1

C.

String main 1

D.

Compilation fails

E.

An exception is thrown at runtime

Given this code for a Planet object:

What is the output?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

E.

Option E

Which statement is true about the switch statement?

A.

It must contain the default section.

B.

The break statement, at the end of each case block, is mandatory.

C.

Its case label literals can be changed at runtime.

D.

Its expression must evaluate to a single value.

Given the definitions of the MyString class and the Test class:

What is the result?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Given the code fragment:

Test.java:

Which is the result?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

E.

Option E

Given the code fragments:

What is the result?

A.

Compilation fails only at line n2.

B.

RTool::exportTool::export

C.

Tool::exportTool:export

D.

Compilation fails only at line n1.

E.

Compilation fails at both line n1 and line n2.

Given the code fragment from three files:

Which code fragment, when inserted at line 2, enables the code to compile?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

E.

Option E

Given the code fragment:

What is the result?

A.

Sum is 600

B.

Compilation fails at line n1.

C.

Compilation fails at line n2.

D.

A ClassCastException is thrown at line n1.

E.

A ClassCastException is thrown at line n2.

Given:

What is the result?

A.

Option A

B.

Option B

C.

Option C

D.

Option D

Given the code fragment:

And given the requirements:

1. Process all the elements of the array in the reverse order of entry.

2. Process all the elements of the array in the order of entry.

3. Process alternating elements of the array in the order of entry.

Which two statements are true? (Choose two.)

A.

Requirements 1, 2, and 3 can be implemented by using the enhanced for loop.

B.

Requirements 1, 2, and 3 can be implemented by using the standard for loop.

C.

Requirements 2 and 3 CANNOT be implemented by using the standard for loop.

D.

Requirement 2 can be implemented by using the enhanced for loop.

E.

Requirement 3 CANNOT be implemented by using either the enhanced for loop or the standard for loop.

Given the code fragment:

What is the result?

A.

AB

B.

A element 0B element 1

C.

A NullPointerException is thrown at runtime.

D.

A 0B 1

Given these requirements:

    Bus and Boat are Vehicle type classes.

    The start() and stop() methods perform common operations across the Vehicle class type.

    The ride() method performs a unique operations for each type of Vehicle.

Which set of actions meets the requirements with optimized code?

A.

1. Create an abstract class Vehicle by defining start() and stop() methods, and declaring the ride()

abstract method.

2. Create Bus and Boat classes by inheriting the Vehicle class and overriding the ride() method.

B.

1. Create an interface Vehicle by defining start() and stop() methods, and declaring the ride()

abstract method.

2. Create Bus and Boat classes by implementing the Vehicle class.

C.

1. Create an abstract class Vehicle by declaring stop(), start(), and ride() abstract methods.

2. Create Bus and Boat classes by inheriting the Vehicle class and overriding all the methods.

D.

1. Create an interface Vehicle by defining default stop(), start(), and ride() methods.

2. Create Bus and Boat classes by implementing the Vehicle interface and overriding the ride()

method.

Given the code fragment:

Which code fragment, when inserted at line 9, enables the code to print true?

A.

String str2 = str1;

B.

String str2 = new String(str1);

C.

String str2 = sb1. toString();

D.

String str2 = "Duke";

Given:

and the code fragment:

What is the result?

A.

AC

B.

BD

C.

BC

D.

AD

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