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

Core Java Interview Questions

Questions Answers Views Company eMail

What is the purpose of interface?

1018

Can we use catch statement for checked exceptions?

981

Explain features of interfaces in java?

1005

Define linked list and its features with signature?

1014

Explain about procedural programming language or structured programming language and its features?

1116

Can we make main() thread as daemon?

1127

What is jar?

1135

Explain about static imports in java?

1013

What is the scope or life time of instance variables?

1132

If we don’t want some of the fields not to serialize how to do that?

1023

Explain about field hiding in java?

956

Differences between traditional programming language and object oriented programming language?

1142

Explain scope or life time of local variables in java?

1041

Explain hashset and its features?

1166

What is hashtable and explain features of hashtable?

996

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Un-Answered Questions { Core Java }

What does percent mean in java?

1039

Can private class be extended java?

1043

What is the abstraction?

1031

What is substring in java?

1240

What is your platform’s default character encoding?

1099

What is difference between throw and throws ?

1157

Explain about assignment statement?

1038

What is the main use of generics in java?

1005

How many decimal places is a double?

1004

Which variables are stored in stack?

915

What is the difference between preemptive scheduling and time slicing in java programming?

1036

what is the difference between a threads start() and run() methods? : Java thread

1025

Why method overriding is used?

1115

what is a green thread? : Java thread

1032

Why volatile is used in java?

1085

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