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Core Java Interview Questions
Questions Answers Views Company eMail

I/O blocking means?

1 2928

what are the purposes of native, transiant key words?

2 6352

Functionality of JVM?

Infosys,

7 26246

what is a static block?

4 5871

what are class,constructor and primitive data types?

IBM,

2 7940

what is an object and how do you allocate memory to it?

Anshinsoft, Wipro,

6 16393

How many ways can an argument be passed to a subroutine?

Technological University of the Philippines,

3 8811

What are different type of access modifiers?

3 8051

How do you set security in applets?

Wipro,

1 4506

Is JRE required to compile Java files ?

HCL,

4 13452

How to set the Heap size in Java ?

HCL,

2 9541

What is the life cycle of Thread ?

HCL, Varnar Softech,

12 35703

What is the format of Inner Class after it compiled?

1 4082

What is the use of anonymous inner classes ?

DELL, HCL,

12 23786

What is the use join() in Threads ?

HCL,

5 9336


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Un-Answered Questions { Core Java }

What is the importance of finally block in exception handling?

161


What is the purpose of garbage collection in java? When is it used?

158


Explain the importance of import keyword in java?

156


What is a boolean expression in java?

139


What is difference overloading and overriding?

164






What is string in java with example?

110


Is null keyword in java?

155


What happens if we don’t define serial version uid?

190


Which class cannot be a subclass in java?

151


How would you dynamically allocate memory to an array?

215


What is Major and importance difference between for and foreach loop ?

200


What is a class reference?

154


Why static functions are used?

147


Where is the singleton class used?

204


What is assembly language?

173