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 5629

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

1 3466

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

6 10124

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

3 11444

How to convert String into primitive datatype.

6 15777

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 9729

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

4 12935

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

2002

what is tempplate pattern

IBM, RBS,

4 11452

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

HCL, Probe Services,

2355

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

Accenture, Newgen,

5 10854

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

1 3827

what is the J2EE BluPrints?

2132

why Runnable interface is preferable than extending the Thread class?

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

7 27058

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

Hewitt,

17 24120

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Un-Answered Questions { Core Java }

What are the major drawbacks of external iteration?

1065

Explain the difference between arraylist and linkedlist in java?

986

What is the difference between class forname and new?

1006

What is return data type?

1008

Are arrays passed by reference in java?

914

What are the types of sockets in java?

1153

Where is core java used?

1014

What is an immutable class?

1142

How do you input a string in java?

1081

What is the meaning of nullable?

1014

What are the different access modifiers available in java?

1044

Is java call by value?

1093

difference between byte stream class and character stream class?

4558

Why is stringbuffer thread safe?

1047

What is the java idl system?

1045

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