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

Core Java Interview Questions

Questions Answers Views Company eMail

strings in java are objects.why?

2 5544

can we have function for truncating the sign as like abs in oracle.

1 3406

is there any function in java to make the text to blink?

6 9939

what is the purpose of class "Object" which is base class for all classes?

3 11315

How to convert String into primitive datatype.

6 15534

why we import both packages java.awt.*; and java.awt.event.*; as java.awt.*; can import all classes na. then what is the need of importing java.awt.event.*; ?

3 9597

what is the difference between a java object reference and c++ pointer?

4 12783

Hi.... I applied for the post of scientific officer/Engineer-SB(Programmer).Please post the syllabus and sample papers.

1962

what is tempplate pattern

IBM, RBS,

4 11306

what is bmg file and how to create that files?what will it contailn?

HCL, Probe Services,

2310

what is marker interface ? what is the necessity of it?

Accenture, Newgen,

5 10703

what release of java technology are currently available what do they contain?

1 3769

what is the J2EE BluPrints?

2091

why Runnable interface is preferable than extending the Thread class?

Aizza, College School Exams Tests, Sybrant Technologies, Wipro,

7 26881

Interface A { String test(); } Interface B { int test(); } Create a class AB which must implements both A & B interfaces.

Hewitt,

17 23633

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Un-Answered Questions { Core Java }

Why wait and notify methods are declared in object class?

993

What is java ceil?

989

Which collections are thread safe in java?

892

What is function declaration?

929

Why parsing is done?

923

What is the generic class?

922

Which collection is sorted in java?

997

What do you mean by constructor?

944

What is passed by reference and pass by value ?

999

What is api data?

958

How do you use substring in java?

1078

What is method and methodology?

1063

How do you ensure that n threads can access n resources without deadlock?

1270

Explain spliterator in java8?

1014

Is there any tag in htm to upload and download files?

1008

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