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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain access specifiers?

Thomson Reuters, Virtusa,

1133

Explain the concept of proper inheritance?

Thomson Reuters, Virtusa,

1017

When should a function throw an exception?

Thomson Reuters, Virtusa,

1000

When do you call copy constructor?

Tavant Technologies, Virtusa,

915

Difference between operator overloading and function overloading

Tavant Technologies, Virtusa,

1024

Explain about OOPS concepts and fundamentals.

Syntel, Visa,

1004

State the difference between strings and arrays.

Syntel, Visa,

1153

State two differences between C and Java.

Syntel, Visa,

1276

What do you mean by pointer value and address?

Syntel, Visa,

1004

What is a two-pass assembler?

Syntel, Visa,

995

What is the difference between a loader and a compiler?

Syntel, Visa,

983

Explain OOPs concept.

Syntel, Visa,

1047

Explain polymorphism citing an example.

Amazon,

1006

What are exceptions

Futures First,

1041

What is command line argument

TCS,

1164

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Un-Answered Questions { Core Java }

What is outofmemoryerror in java?

977

How are this() and super() used with constructors in java programming?

1025

Explain reverse a linked list recursive java solution?

944

What does it mean that a class or member is final?

945

Is boolean a data type in java?

908

What are the parts of methodology?

936

Explain about member inner classes?

1040

Why null value is used in string?

996

What is difference between filereader and bufferedreader?

903

What is java virtual machine and how it is considered in context of java’s platform independent feature?

1116

What are the differences between string and stringbuffer?

1070

What do you understand by overloading and overriding in java?

1019

What is the difference between superclass and subclass?

1094

What are the advantages of defining packages in java?

930

How to perform selection sort in java?

963

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