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

Core Java Interview Questions

Questions Answers Views Company eMail

Are functions objects in java?

1090

What are the drawbacks of reflection?

1034

What is difference between public static and void?

1033

Is singleton class thread safe?

1009

How do you define a method?

991

Can inner class have constructor?

1056

What is difference between protected and private?

1103

Can we create object of static class?

1042

What is functional interface in java example?

1012

What is supplier in java?

1018

How does singleton class work?

1009

Is passing by reference faster?

1010

Is singleton set an interval?

987

Is age a discrete variable?

1001

Is singleton a bad practice?

1071

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Un-Answered Questions { Core Java }

If you do not want your class to be inherited by any other class. What would you do?

1018

How can we create a synchronized collection from given collection?

1095

Explain runtime exceptions?

1194

Is 0 an irrational number?

1079

What is type parameter in java?

970

Does java map allow duplicates?

914

What is the difference between processes and threads?

1069

what is use of functional interface in java 8?

1051

How objects are stored in java?

1052

Can we serialize static variables in java?

1113

What is hashing principle in java?

1044

What are data types in oop?

1049

What is hashmap in java?

1071

What's the difference between an abstract class and interface in java?

1048

Is space a char?

952

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