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 api data?

1000

Is array an object in java?

961

Do I need java on my computer?

981

What is java command?

1082

Why string is called as immutable?

953

Is java an ide?

981

How many types of interfaces are there?

1074

Is string serializable in java?

1020

What is the purpose of javac exe?

1098

What is difference between word and integer?

1077

What is java objectoutputstream?

985

What is javac in java?

1006

How do you achieve polymorphism in java?

997

What is java argument list?

940

Is array primitive data type in java?

997

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Un-Answered Questions { Core Java }

How many arguments can a method have java?

1025

What is size () in java?

1093

what is the difference between Object Based Language and Object Oriented Language?

1033

How do you sort in java?

979

What is data structure in java?

990

What is collections framework?

1151

What is variable explain?

1003

Which collections are thread safe in java?

925

Can string be considered as a keyword?

1034

What is bean? Where it can be used?

1087

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

969

What are 5 boolean operators?

1176

What is console based application in java?

1041

Why volatile is used in java?

1067

When do you call copy constructor?

976

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