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 is cloneable interface?

8 18806

How many methods does cloneable interface contains?

6 11254

What is a compilation unit?

2 4501

What is a default package ?

7 11743

What is a layout manager?

1 3956

What is a native method?

2 5409

What is a reflection package?

2 5565

What is a serializable interface?

4 8128

What is a stream? what are the different types and classes of Streams?

2 8293

What is unicode?

1 4964

What is a void return type?

6 20620

What is adapter class?

12 53846

What is an Iterator interface?

2 5827

What is an abstract class and abstract method?

5 16043

What is an enumeration class?

2 6095

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Un-Answered Questions { Core Java }

Is arraylist dynamic in java?

994

What is a flag value?

1027

What is a condition in java?

1011

What is strings in java?

1044

How do generics work?

946

What language is an assembler written in?

998

What is externalizable?

1063

How many decimal digits is 64 bit?

932

Can we overload the methods by making them static?

1003

List the interfaces which extends collection interface?

952

What do you mean by an interface in java?

1030

What is the char data type?

1003

What is string in java with example?

1025

Why do we need singleton?

968

Differences between external iteration and internal iteration?

1163

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