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Core Java Interview Questions
Questions Answers Views Company eMail

Why null interfaces are used in Java?

 2 7266

What is a Wrapper class?

 14 40285

Write a program for recursive Traverse?

 1 5025

Write a program to create a binary Tree ?

 2 8304

what are Hostile Applets?

 1634

what is a transient variable?

 5 9612

what is the JNDI?

 3 5590

What JNDI(Java Naming and Directory Interface) provides?

 4 5916

Explain, why the constructor is required in implemented class?

 4 6711

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

 5 20277

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

 8 21594

where u use Abstraction and Interface in real time

Sonata,

3 7505

Difference between JDK, JRE, JVM

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

16 91326

what do you meant by Platform-Independent?

Persistent,

6 11959

Why Java is not purely object oriented?

Elitecore, Persistent, Reliance, Wipro,

50 66042

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Un-Answered Questions { Core Java }

What is string builder?

501

What is the full form of jpeg?

554

You're given a Boolean 2D matrix, can you find the number of islands?

641

What is difference between next () and nextline () in java?

573

Does java have extension methods?

564




When do we use synchronized methods in java?

614

Why is java called java?

567

What is meant by final class?

598

How many types of literals are there in JAVA?

616

What does \ mean in regex?

662

How to make a read-only class in java?

620

Are maps ordered java?

542

Tell some latest versions in JAVA related areas?

594

What is join () in java?

560

What are different types of encoding?

633

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