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

Core Java Interview Questions

Questions Answers Views Company eMail

Can a class extend abstract class or interface? why

Wipro,

4 9858

What is the difference between Access Modifier and Access specifier?

1 7263

Is it possible to write method inside method

L&T,

4 12152

what is the default value of a variable char?(If not assigned)

4 7555

Write a java program to get a string of words and print the numbers of each word count in descending order

Logica CMG, Subex,

11 31185

Where can I find data structures question and answers with comprehensive working code written in Java

Amazon,

2484

if the memory capacity is 700 presently occupied by process is 690. then another process request space(40) how this situation handled in java.

Wipro,

4 7201

what is the logic inside any default constuctor?

2 4520

How TreeMap sorts the objects inside it?? suppose if have include one employee object and one car object. On what basis it will sort?

5 14847

Java is based on pass by reference or pass by value ..

L&T, Wipro,

6 11158

difference between arraylist and linkedlist otherthan performance

L&T,

2 10816

why pointer is not used in java?

3 11867

what are the difference between Java and .Net?

5 8703

can any body body expalin best definitions & best real time exaples for opps concepts.

Accel,

2328

What is map and hashmap? also tell the difference.

1 4410

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Un-Answered Questions { Core Java }

How does java pattern compile work?

1025

Can we create an object of static class in java?

1061

what is meant wrapper classes?

1306

Explain about the security aspect of java?

1019

What is final access modifier in java?

1219

What is anonymous inner class?

1131

What is the difference between a choice and a list?

1136

What do you mean by formatting?

1050

What is ph and buffers?

1051

What is data string?

1052

How can an object be unreferenced?

1072

What is the difference between the jdk 1.02 event model and the event-delegation model introduced with jdk 1.1?

1199

How do you reverse sort a list in java?

1007

What is array pointers ?

1090

What are the four corner stones of oop?

1084

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