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 ?

1144

Explain about main thread in java?

1151

What access modifiers can be used for class ?

1081

Explain when classnotfoundexception will be raised ?

1091

Explain when noclassdeffounderror will be raised ?

1103

What all methods are used to prevent thread execution ?

1079

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

1222

What are packages in java?

5 1809

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

1045

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

1067

Can we override constructors in java?

1215

Can sleep() method causes another thread to sleep?

1085

Explain importance of throws keyword in java?

1042

In how many ways we can create threads in java?

1278

Can we have multiple catch block for a try block?

1074

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Un-Answered Questions { Core Java }

What is map java?

1043

what is abstract class in Java?

1174

Do I need to import java.lang package any time? Why?

1465

Which method cannot be overridden in java?

1043

Which programming language is most secure?

1039

Why java is a platform independent? Explain

1165

What is difference between static and final?

1137

Can we increase array size dynamically in java?

1014

How do you clear an arraylist in java?

1024

How can we access some class in another class in java?

1057

Explain the reason behind ending a program with a system.exit(0)?

1140

What are the steps in the jdbc connection?

1083

What is the common usage of serialization?

1229

How many boolean functions are there?

1018

Difference between operator overloading and function overloading

1126

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