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?

1096

What is singleton pattern?

1126

What is the similarity between dynamic binding and linking?

1124

Explain java thread life cycle.

1046

How transient variable is different from volatile variable?

1088

Tell us something about set interface.

1007

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

1125

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

1238

What exceptions occur during serialization?

1097

What are the different collection views provided by maps?

995

How static variable work in java?

1131

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

1160

Tell us something about different types of casting?

948

What is final modifier?

1064

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

1040

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Un-Answered Questions { Core Java }

Explain different types of wrapper classes in java?

1032

What is the purpose of lambda expressions?

1062

What is runtime polymorphism or dynamic method dispatch?

1018

Can we extend singleton class?

957

Is there a jre for java 11?

1100

Differentiate between static and non-static methods in java.

1059

Do I need java on my pc?

1057

What does main method?

986

Which number is denoted by leading 0x or 0x in java?

1050

What are constants and how to create constants in java?

986

How to use string tokenizer class.

1216

Difference between object instantiation and construction ?

1075

What are the difference between composition and inheritance in java?

1034

What is size () in java?

1098

What is xslt in java?

985

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