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Core Java Interview Questions
Questions Answers Views Company eMail

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

Avaya,

1 2796

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

Agiline, FINO PayTech, HCL,

2 2952

Describe OOP in java?

Syntel,

2 3301

What is difference between overloading and overriding?

Accenture,

2 3968

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

Virtusa,

1 3161

How do we make a class serialize?

Syntel,

3 3366

What is serialVersionUID and what is its need?

KPIT,

1 2882

What is deserialization and how do we do deserialization?

Synechron,

3 3611

What is difference between compatible and incompatible changes in serialization?

Synechron,

1 3457

What is Difference between Serializable and Externalizable in Java serialization?

Cognizant, IBM,

1 3343

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

IBM,

4 3912

How is object created in java?

Cap Gemini,

5 4931

What is the life-cycle of an object?

Broadridge, Syntel,

2 6310

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

SunGard,

3 3830

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

Accenture, iGate, IntoNET, Value Labs,

5 4509

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Un-Answered Questions { Core Java }

What does %d do in java?

566

Explain a situation where finally block will not be executed?

561

What are the important features of Java 10 release?

500

What is difference between printf and scanf?

501

What is the difference between variable declaration and variable initialization?

492




v-model life cycle

1607

Can we use string in the switch case?

565

What is numeric data type?

514

How does a for loop work?

486

what is use of functional interface in java 8?

546

Does string is thread-safe in java?

578

What is anonymous inner class?

600

What is the relationship between clipping and repainting under awt?

596

What is final int?

515

What is the difference between sleep and wait in java?

500

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