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 a Presistent Object?

InfoAxon Technologies,

1254

How do you find the maximum number from an array without comparing and sorting?

BlackRock,

1138

What do you mean by a JVM?

GE,

1272

Explain the selection sort algorithm and state its time complexity?

Flextronics,

1034

Give me an example of array and linked list? Where they can be used?

Ericsson,

1022

What is meant by 'bit masking' in java?

DELL,

1204

If we allocate the memory using 'new' & de-allocated using 'free' then what will happen?

CDAC,

1063

What is an interoperable application in java ?

HCL,

1021

These static constructors are correct ? class A { statc intA() { } static A(int x,int y) { } static A(int x) { } }

HCL,

1098

What is the difference between Error, defect,fault, failure and mistake?

HCL,

1219

What are assertions in java?

Impetus,

1 2167

How are java objects passed to a method and what are native methods?

Genpact,

1095

What is scope & storage allocation of global and extern variables? Explain with an example

IBS,

1057

Explain with example the concept of constant variable in java.

HCL,

1208

what is the purpose of "virtual"?

EDS,

1101

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Un-Answered Questions { Core Java }

What is the synchronized method modifier?

1226

what type of questions asked for barclays technologies pune please send urgent

5677

What is meant by JVM? Is JVM platform independent or not?

1091

What is the purpose of file class?

1046

Can we define constructor in inner class?

1020

What is the escape character in java?

1008

What is the difference between inheritance and encapsulation?

1162

What is the old name of java?

1015

What is primitive data type in java?

997

What is string syntax?

1067

What is java lang object?

996

What is a modifier?

1536

What is a parameter in java?

1003

What are the 6 mandatory procedures for iso 9001?

1045

Can a constructor be made final?

1127

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