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 collections you have worked on? Internal working of Hashmap?

Bravura Solutions,

1 2835

What design pattern you have used in your project? I answered Factory pattern, how it is implemented? What are its advantage? Do know about Abstract Factory?

Bravura Solutions,

2506

Can static methods be overridden?

Bravura Solutions,

5 9796

java Api provided try catch finally ,try catch(its ok) but why try finally and exception occured at try then how the flow is?

Naaptol,

1 5053

Why java does not supports multiple inheritance?

TCS, VSoft,

3 6154

what is associative array

Tech Mentro,

1 3504

what is the difference between static class and singleton class? can we create static class?

L&T, Octazen, Vamsi Labs,

2 6232

ublic class Java_Coding_Samples { public static void JavaHungr(NumberFormatException ae){ System.out.println("integer"); } public static void JavaHungry(Exception e){ System.out.println("string"); } public static void JavaHungry(ArithmeticException ae){ System.out.println("object"); } public static void main(String[] args) { JavaHungry(null); }

1 2749

what is ABSTRACTION and what are using in real time project?

iGate,

1 4013

For technical interview question please sir send me because tomorrow my interview

FactSet Systems,

1 4699

How to define a constant variable in Java?

TCS,

1 3144

java is pure object-oriented programming language?why it is platform independent.

1 2856

Why should we use java?

IBM,

1 3037

How many Java environments are there?

Phantom Technologies,

1 3029

What is Java Classloader?

Phantom Technologies,

1 2926

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Un-Answered Questions { Core Java }

How will you calculate the depth of a binary tree if the tree contains 15 nodes?

1082

What is java full form?

1030

How are the elements of a gridbaglayout organized in java programming?

983

What is meant by final class?

1118

What is the finalize method do?

1102

Can we use string in switch case in java?

1058

What is the different between get and post?

974

Explain the meaning of java applet.

1071

How to provide security in java

2279

Hi friends am new to java. I read jar file means collection of java files. For executing struts application what are the necessary jar files. " struts.jar " file contains what. can u explain

1931

What are the different ways of implementing thread? Which one is more advantageous?

986

Write a program in java to find the maximum and minimum value node from a circular linked list.

1086

Is java se free?

938

Explain the difference between jdk, jre, and jvm?

1041

Do I need java on my computer?

981

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