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

Core Java Interview Questions

Questions Answers Views Company eMail

How do you use parseint in java?

979

What is nextint java?

1055

Why scanner is used in java?

1069

What are singleton services?

891

What is anti pattern in programming?

966

What is considered an anti pattern?

930

Why should we use singleton pattern instead of static class?

928

What is singleton math?

1123

What is meant by singleton class?

1031

When would you use a static class?

978

Why can't we use static class instead of singleton?

936

What is the difference between static class and normal class?

1027

Why is singleton instance static?

991

How can we break singleton in java?

966

Should database connections be singleton?

959

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Un-Answered Questions { Core Java }

How many types of memory areas are allocated by JVM in java?

1070

How do you know if a value is nan?

1057

Does list allow duplicates in java?

928

What is hash in java?

963

What are thread groups?

998

How list contains works in java?

980

Explain java thread life cycle.

1030

What are implicit objects in java?

978

How can an object be unreferenced?

1021

Can I uninstall java?

1047

Can we have a try block without catch block?

981

What are daemon Threads in java?

1199

How many ways can an argument be passed to a subroutine and explain them?

1024

What is an object in java and how is it created?

1054

What is the difference between a choice and a list?

1076

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