Java Operators

Java Control Statements

Object Oriented Programming

Java Built-in Classes

Java File Handling

Java Error & Exceptions

Java Multithreading

Java Synchronization

Java Networking

Java Collections

Java Interfaces

Java Data Structures

Java Collections Algorithms

Advanced Java

Java Miscellaneous

Java APIs & Frameworks

Java Class References

Java Useful Resources

Java Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Core Java. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Q 1 - Which of the following is not a keyword in java?

Answer : B

Explaination

Boolean is a class and is not a keyword.

Q 2 - What is the size of short variable?

Answer : B

Explaination

The short data type is represented by 16-bit signed two's complement integer.

Minimum value: -32,768

Maximum value: 32,767

Q 3 - What is the default value of short variable?

Answer : B

Explaination

short variable has default value of 0 if defined as an instance/static variable.

Q 4 - Which of the following is true about protected access modifier?

A - Variables, methods and constructors which are declared protected can be accessed by any class.

B - Variables, methods and constructors which are declared protected can be accessed by any class lying in same package.

C - Variables, methods and constructors which are declared protected in the superclass can be accessed only by its child class.

D - None of the above.

Answer : B

Explaination

Variables, methods, and constructors which are declared protected can be accessed by any class lying in the same package.

Q 5 - What is local variable?

A - Variables defined inside methods, constructors or blocks are called local variables.

B - Variables defined outside methods, constructors or blocks are called local variables.

C - Static variables defined outside methods, constructors or blocks are called local variables.

D - None of the above.

Answer : A

Explaination

Variables defined inside methods, constructors or blocks are called local variables. The variable will be declared and initialized within the method and it will be destroyed when the method has completed.

Q 6 - Can be constructor be made private?

A - True.

B - False.