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 domain object

1 4670

what are the analysis of an object

2 4360

why we need this (1.object,2.class,3.data hiding,4.encapsulation,5.abstraction,6. polymorphism,7.inheritance)

2 4941

What is the difference between Static and final?

1 5832

What is immutable class? how to make a Class explicitly "Immutable"?Wap to make a class explicitly immutable.

3 7540

How many types of JVM's (OR) Name of the JVM's which are used in Tomcat & Weblogic servers ?

TCS,

1 13238

how can i use a nonsynchronized hashtable?

CoreObjects,

2571

why we use merge option in hybernate pls give a ex snippet

CoreObjects,

1997

What are the Abstract Classes provided by Java?

Oracle,

5 10320

Why are inner classes required?

Oracle,

3 8388

what is the context

2 4364

Class A extends Class B but Class A also inherit Super Class Object so it is multiple inheritence give reason in support of your answer

3 5740

relation between list and linked list

Infosys,

1 4453

use of wrapper classes?

IBM,

3 6748

what r callable statement and give their proper use

2 5848

Post New Core Java Questions

Un-Answered Questions { Core Java }

What is port number in java?

1041

What is the difference between assignment and initialization?

1050

List some oops concepts in java?

1034

What is the difference between a constructor and a method?

1250

What is locale?

1032

What is an array length?

904

What are keywords in programming?

1012

What is a copy constructor in java?

1124

What is the difference between static (class) method and instance method?

1082

What is java used for?

1017

Define jit compiler?

1139

What is string pool?

1125

Is string passed by reference in java?

999

Describe 2 different ways to concatenate two strings.

1202

What is a method signature java?

1053

For More Un-Answered { Core Java } Questions Click Here