Java MCQs (Chapterwise Multiple Choice Questions)

By which method does Java pass data?

Pass by reference only.

Pass by value only.

Both pass by reference and pass by value.

How many bytes are in a long in Java?

Answer & Explanation

Correct Answer: Pass by value only.

Note: This Question is unanswered, help us to find answer for this one
4

2

16

8

32

Answer & Explanation

Correct Answer: 8

Note: This Question is unanswered, help us to find answer for this one
Which of the following lines will not throw a compile time error?

int a2[5];

int a2[4] = {3,4,5,6};

int []a1[] = new int[3][3];

All throw compile time errors.

Answer & Explanation

Correct Answer: int []a1[] = new int[3][3];

Note: This Question is unanswered, help us to find answer for this one
Which of the following variable declarations is illegal in Java?

float myVar = 5.7f;

Double[] myVar = {1.0,2.0,2.5,2.7};

List> myVar;

List myVar;

Answer & Explanation

Correct Answer: List myVar;

Note: This Question is unanswered, help us to find answer for this one
What is the default scope of a method?

protected

public

static

package-private

Answer & Explanation

Correct Answer: package-private

Note: This Question is unanswered, help us to find answer for this one
Which of the following IS NOT a property of the equals() method?

atomic

reflexive

symmetric

transitive

Answer & Explanation

Correct Answer: atomic

Note: This Question is unanswered, help us to find answer for this one
Is it possible to create zero length arrays?

Yes, but only for arrays of object references

Yes, you can create arrays of any type with length zero

Yes, but only for primitive datatypes

No, arrays of length zero do not exist in Java

Answer & Explanation

Correct Answer: Yes, you can create arrays of any type with length zero

Note: This Question is unanswered, help us to find answer for this one
The foreach loop in Java is constructed as:

for (Object o : collection)

foreach (Object o : collection)

there is no foreach loop in Java

for (Object o in collection)

Answer & Explanation

Correct Answer: for (Object o : collection)

Note: This Question is unanswered, help us to find answer for this one
Java is a pure object oriented language. true or false?

false

true

not sure

50 50

Answer & Explanation

Correct Answer: false

Note: This Question is unanswered, help us to find answer for this one
Java interfaces can extend...

final classes.

one other interface.

nothing: extension is not valid for interfaces.

multiple interfaces.

Answer & Explanation

Correct Answer: multiple interfaces.

Note: This Question is unanswered, help us to find answer for this one
Java Quick Quiz

Poor Results!

You need a lot of improvement.

Just don't give up!

Correct Answers: 0/10

Start Practicing with our MCQs given below.

MCQ on Applet	MCQ on Basic Java
MCQ on Introduction to Java	MCQ on J2EE (Java Platform, Enterprise Edition)
MCQ on Java AWT And Swing	MCQ on Java Database Connectivity
MCQ on Java I/O Package	MCQ on Java Language Access Control And Declaration
MCQ on Java keywords	MCQ on Sun Certified Java Programmer (SCJP)
General Java MCQs

Java MCQ

Java Quick Quiz

By which method does Java pass data?

4

Which of the following lines will not throw a compile time error?

Which of the following variable declarations is illegal in Java?

What is the default scope of a method?

Which of the following IS NOT a property of the equals() method?

Is it possible to create zero length arrays?

The foreach loop in Java is constructed as:

Java is a pure object oriented language. true or false?

Java interfaces can extend...