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

Core Java Interview Questions

Questions Answers Views Company eMail

When is finally block not called?

1093

What is singleton pattern?

1120

What is the similarity between dynamic binding and linking?

1122

Explain java thread life cycle.

1038

How transient variable is different from volatile variable?

1082

Tell us something about set interface.

997

How do constructors use this() and super()?

1122

Using callable statement how can you pass out parameters, explain with example?

1229

What exceptions occur during serialization?

1088

What are the different collection views provided by maps?

991

How static variable work in java?

1127

What is the difference between final, finally and finalize()?

1156

Tell us something about different types of casting?

943

What is final modifier?

1057

Tell me are there implementations for sorting and searching in the java libarary?

1037

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Un-Answered Questions { Core Java }

What is the difference between a break statement and a continue statement?

1040

Explain creating threads by extending thread class ?

1055

Can each java object keep track of all the threads that want to exclusively access it?

952

Which class cannot be a subclass in java?

1023

How do you remove all elements from an arraylist in java?

1029

What is a prefix function.write down a code to compute prefix function.

1058

What is string in java with example?

1024

Difference between throw and throws?

1105

Can we sort set in java?

952

What is java thread dump, how can we get java thread dump of a program?

1004

Explain serialization and deserialization in java?

1007

Tell me how many ways are there to initialise an integer with a constant.

1110

Where is jre installed?

1044

What is a nested class?

1125

What is reverse function?

1135

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