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

Core Java Interview Questions

Questions Answers Views Company eMail

what is the constructor and how many types of constructors are used in java?

958

What is the purpose of the system class in java?

1013

Why java is a platform independent? Explain

1023

how we can make a write-only class in java?

985

Explain the advantages of packages in java?

870

Explain the features of java?

973

What is the purpose of main function in java?

990

What are different access specifiers in java?

963

Explain the difference between abstract class and interface in java?

945

Java is pass by value or pass by reference? Explain

949

what is encapsulation in java? Explain

1063

what do you mean by classloader in java?

984

What do you mean by inner class in java? Explain

1020

what is static import in java? Explain

975

explain the difference between jdk and jvm?

941

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Un-Answered Questions { Core Java }

What is parsing and its types?

1044

What is a war file?

1021

What are the main uses of the super keyword?

932

How can you read an integer value from the keyword when the application is runtime in java? example?

1070

Explain about OOPS concepts and fundamentals.

1009

What is the static block?

1016

How is hashcode calculated in java?

995

What is currentthread()?

941

Is empty in java?

1005

What is ternary operator?

972

Which browsers work with java?

1035

What are the access modifiers in java?

1000

Explain JMS in detail.

978

What is the difference between variable declaration and variable initialization?

993

Does java vector allow null?

909

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