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

Core Java Interview Questions

Questions Answers Views Company eMail

In the below example, what will be the output?

1029

What is the default access specifier for variables and methods of a class?

1205

What are the two ways of implementing multi-threading in java?

1 1507

What's the difference between comparison done by equals method and == operator?

972

How infinite loop is declared?

1021

What is default switch case? Give example.

1007

What is the difference between double and float variables in java?

1153

How are destructors defined in java?

1032

In the below example, how many string objects are created?

1047

What is ternary operator?

1008

Can a class be a super class and a sub-class at the same time? Give example.

1 1563

What's the access scope of protected access specifier?

1038

I want to re-reach and use an object once it has been garbage collected. How it's possible?

1026

How can we pass argument to a function by reference instead of pass by value?

1111

Can main() method in java can return any data?

1182

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Un-Answered Questions { Core Java }

Can we define private and protected modifiers for the members in interfaces?

1103

What are the advantages of java inner classes?

1070

What is regex used for?

992

what do you understand by synchronization? Or what is synchronization and why is it important? Or describe synchronization in respect to multithreading? Or what is synchronization? : Java thread

936

Explain illegalmonitorstateexception and when it will be thrown?

1101

Explain about class in java?

1109

Why are lists ordered in java?

1010

Is null function in java?

1041

What is array command?

1182

Name component subclasses that support painting in java programming?

1069

How we can run a jar file through command prompt in java?

969

What is length in java?

1014

What is better- service oriented or batch oriented solutions?

2220

How many JVMs can run on a single machine and what is the meaning of Just-In-Time (JIT) compiler?

1452

Can we write method inside a method in java?

989

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