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 does java enable high performance?

1158

What is mean by collections in java?

1190

Difference between default and protected access specifiers?

1137

What is serialversionuid?

1100

Which methods are used during serialization and deserialization process?

997

Explain about join() method?

979

What are the advantages of exception handling?

1068

What is mean by exception?

1037

What are the features in java?

1080

What does yield method of the thread class do?

1046

Difference between start() and run() method of thread class?

1077

Explain about exception propagation?

1046

What are the types of exceptions?

1062

How to stop a thread in java? Explain about sleep () method in a thread?

1024

What is meant by overloading?

1075

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Un-Answered Questions { Core Java }

Why does java have different data types for integers and floating-point values?

1022

what is meant by Byte code concept in Java?

1077

Is an integer an object?

973

What are the concepts of 'OOPS'?

1081

What is method with example?

1127

What is the difference between instanceof and isinstance?

1069

How do you sort a set in java?

923

What is the mapping mechanism used by java to identify IDL language?

1015

what are abstract functions?

1035

What is mean by exception?

1037

When we should use serialization?

1033

What is difference overloading and overriding?

1179

What if I write static public void instead of public static void in java?

1097

Can we declare an array without size in java?

1025

Can one thread block the other thread?

1038

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