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

Core Java Interview Questions

Questions Answers Views Company eMail

Difference between method overloading and method overriding in java ?

1106

Explain about main thread in java?

1098

What access modifiers can be used for class ?

1037

Explain when classnotfoundexception will be raised ?

1057

Explain when noclassdeffounderror will be raised ?

1069

What all methods are used to prevent thread execution ?

1044

What are inner classes or non static nested classes in java?

1195

What are packages in java?

5 1695

Difference between ‘is-a’ and ‘has-a’ relationship in java?

1027

Explain why wait(), notify() and notifyall() methods are in object class rather than in thread class?

1027

Can we override constructors in java?

1162

Can sleep() method causes another thread to sleep?

1058

Explain importance of throws keyword in java?

990

In how many ways we can create threads in java?

1231

Can we have multiple catch block for a try block?

1032

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Un-Answered Questions { Core Java }

Is java call by value?

1105

What is a class reference?

1121

Why put method is used?

1027

When the constructor of a class is invoked?

1049

What is map java?

991

Explain abstract class in java?

1081

What are the characteristics of Final,Finally and Finalize keywords.

1193

Name the components that are termed to be Heavy-weight component but available in Light-weight components?

2505

Is string is a data type?

961

Is an array a vector?

1059

can any body body expalin best definitions & best real time exaples for opps concepts.

2289

What is java in layman terms?

1022

How does class forname work in java?

982

What is difference between static and abstract class?

1022

What is the final keyword denotes?

1126

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