Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Realized?

2195

What is the specification of ?CODEBASE? in an applet?

1 4192

When you Click a Button, What event will be fired?

5 7354

What error occurs if a try-catch-finally statement sequence does not have a catch clause?

4 8661

What happens if an exception is not caught?

Amazon,

6 17280

What happens when you assigned a 'double' value to a 'String'?

8 11246

AWT event listeners extends what interface?

1 3240

How listener identify that the event came from a particular object?

2000

What is AppletStub?

1 3532

What is Connection pooling? Explain Pros and Cons?

1 9634

What is constructor and virtual function?

5 11591

Can we call virtual funciton in a constructor ?

XX,

2214

What is an Exception ?

10 14926

What is Remote Interface ?

CTS,

6 13003

What is a Java package and how is it used?

2 8545

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Un-Answered Questions { Core Java }

what is the purpose of the wait(), notify(), and notifyall() methods? : Java thread

1001

What is int argc char * argv?

1182

What does int [] mean in java?

1043

Which is better list or arraylist in java?

875

Is java same as core java?

1105

How can we make sure main() is the last thread to finish in java program?

1205

Are global variables initialized to zero?

965

Why hashset is used in java?

1084

When do we use synchronized methods in java?

1054

How can you make a class serializable in java?

998

what is synchronization and why is it important? : Java thread

1101

What is an empty class? What functionality does it offer in Java?

1284

Is null or empty java?

993

Write a program to print the pattern given below

943

Can we override protected method in java?

1072

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