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 use of inner class in java?

1169

What is local class in java?

1100

What are the classes of java?

982

Is singleton thread safe in java?

996

Can memory leak in java?

1046

Can a static method be overridden in java?

1031

What is an anonymous class in java?

1113

What is package private scope in java?

956

Can we extend private class in java?

993

What is adapter in java?

936

Can a class be private or protected in java?

1076

How do you override a private method in java?

998

Why we use protected in java?

989

What is private static class in java?

1033

What if constructor is protected in java?

1139

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Un-Answered Questions { Core Java }

What is the map interface in java programming?

1025

Can we override private method?

1105

What does system out println () do?

1021

What is difference between synchronize and concurrent collection in java?

1088

What is a key in java?

990

What is identifier with example?

1061

What is a linkedhashmap java?

1015

What is the internal implementation of set in java?

952

What is the benefit of inner classes in java?

1107

Can a constructor be private and how are this() and super() method used with constructor?

1016

What is the difference between object oriented programming language and object based programming language?

1031

What is the difference between int and integer in java?

1044

What is thread safe singleton?

964

Is string is a class in java?

975

Can a class have an interface?

1005

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