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Core Java Interview Questions
Questions Answers Views Company eMail

Why null interfaces are used in Java?

 2 7652

What is a Wrapper class?

 14 41507

Write a program for recursive Traverse?

 1 5456

Write a program to create a binary Tree ?

 2 8552

what are Hostile Applets?

 1776

what is a transient variable?

 5 10329

what is the JNDI?

 3 5957

What JNDI(Java Naming and Directory Interface) provides?

 4 6445

Explain, why the constructor is required in implemented class?

 4 7138

is java support call by reference and call by value, if supports please explain?

 5 20872

what is the difference between the "protected and default" modifiers?

 8 22356

where u use Abstraction and Interface in real time

Sonata,

3 7916

Difference between JDK, JRE, JVM

Deloitte, HCL, Mind Tree, Oracle, Reliance, TCS, ThinkBox,

16 92777

what do you meant by Platform-Independent?

Persistent,

6 12518

Why Java is not purely object oriented?

Elitecore, Persistent, Reliance, Wipro,

50 69878

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Un-Answered Questions { Core Java }

What Is Query Throttling in java?

748

What is the primitive type short?

775

What is constant in programming?

743

How is tree Mirroring implemented?

791

Can an integer be a string?

693




What is difference between jdk,jre and jvm?

750

Is it possible to override the main method?

700

What is a default constructor and also define copy contrucyor?

824

Explain a situation where finally block will not be executed?

741

What is bom encoding?

754

Why doesn't the java library use a randomized version of quicksort?

722

Why main function is static?

865

What is difference between filereader and bufferedreader?

693

Explain the difference between treeset and treemap in java?

721

What is the meaning of nullable?

746

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