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

Core Java Interview Questions

Questions Answers Views Company eMail

Are the equals() and hashCode() protected methods of object class?

Avaya,

1 3715

What are the uses of final, finally and finalize in java?

Agiline, FINO PayTech, HCL,

2 3915

Describe OOP in java?

Syntel,

2 4272

What is difference between overloading and overriding?

Accenture,

2 5171

Why do we need main method to execute a java program?

Virtusa,

1 4009

How do we make a class serialize?

Syntel,

3 4545

What is serialVersionUID and what is its need?

KPIT,

1 3738

What is deserialization and how do we do deserialization?

Synechron,

3 4796

What is difference between compatible and incompatible changes in serialization?

Synechron,

1 4302

What is Difference between Serializable and Externalizable in Java serialization?

Cognizant, IBM,

1 4103

What is an object in Java and what are its benefits?

IBM,

4 5439

How is object created in java?

Cap Gemini,

5 6463

What is the life-cycle of an object?

Broadridge, Syntel,

2 7485

why static class in java or what is use of static class in java

SunGard,

3 5034

Tell me the programme for this @ 1 2 @ @ @ 1 2 3 4

Accenture, iGate, IntoNET, Value Labs,

5 6099

Post New Core Java Questions

Un-Answered Questions { Core Java }

How does finally block differ from finalize() method?

1043

What do you mean by local variable and instance variable?

947

Explain an algorithm to find depth of a binary tree.

1039

What are the differences between forwarding () method and sendredirect() methods?

1104

What is a class instance variable?

1117

What is static method with example?

1168

Is it possible to compare various strings with the help of == operator?

989

Does A Class Inherit The Constructors Of Its Superclass?

1067

What does g mean in regex?

980

How to convert string to char and vice versa?

1000

What is the maximum size of array in java?

981

What is the importance of main method in Java?

1055

Can you start a thread twice in Java?

1112

What are the main uses of java?

988

When do we use synchronized blocks and advantages of using synchronized blocks?

1226

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