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

Core Java Interview Questions

Questions Answers Views Company eMail

Why is the main method declared static?

1141

I don’t want my class to be inherited by any other class. What should I do?

1016

Can an interface implement another interface?

1041

What do you understand by private, protected and public?

1041

Which oo concept is achieved by using overloading and overriding?

1014

A non-static inner class may have object instances that are associated with instances of the class’s outer class. A static inner class does not have any object instances.

1019

What is the purpose of declaring a variable as final?

972

What is a marker interface?

1 1165

Can a abstract class be declared final?

1000

What are instance variables?

1081

What is the difference between method overriding and overloading?

1234

Can a method inside a interface be declared as final?

1005

Can a main method be overloaded?

1025

Can a method be overloaded based on different return type but same argument type?

970

What are local variables?

1053

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Un-Answered Questions { Core Java }

What is the use of join method?

1034

What exactly is methodology?

925

Can we create object of inner class in java?

947

What are void methods?

1028

What is the memory leak in java?

1041

What is close method? How it's different from Finalize & Dispose?

1067

What are the restrictions imposed by a Security Manager on Applets?.

2614

What are basic data types?

1102

What is thread start?

962

What are the steps in the jdbc connection?

1026

What are accessor methods in java?

1016

What are the restriction imposed on a static method or a static block of code?

1060

What is instanceof keyword?

1218

Can a static block throw exception?

1099

What is callable java?

983

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