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 effect of keeping a constructor private?

948

What is the use of inner class?

1042

What languages are pass by reference?

1048

What is singleton class example?

1024

What is the difference between class forname and new?

1004

What is the difference between pass by reference and pass by pointer?

1094

Which is better singleton or static class?

981

What is the meaning of course?

1098

Why do we need singleton class?

1001

What is the difference between call by reference and call by pointer?

957

What is the difference between sop and work instruction?

925

Why is logger singleton?

1117

What is pass by value?

945

What is t in parametric equations?

988

What is the purpose of a parameter?

1072

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Un-Answered Questions { Core Java }

Explain about class in java?

1099

What is java’s garbage collected heap?

973

Can we serialize static variables in java?

1085

What will be the output of round(3.7) and ceil(3.7)?

1118

How objects are stored in java?

1033

Can we make a constructor final?

1014

When throws keyword is used?

997

Can we use both this () and super () in a constructor?

1002

What was java originally called?

954

What do you understand by access specifiers in Java?

1012

What is the difference between integer parseint and integer valueof?

998

What is rule of accessibility in java?

1025

Write a program to find the whether a number is an Armstrong number or not?

1021

Can we clone singleton object in java?

1017

Explain about sets?

1020

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