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 method overriding?

1089

What is the difference between an array and an array list?

1031

What is singleton class in java and how can we make a class singleton?

1170

What is the difference between equals() and == in java?

980

Differentiate between static and non-static methods in java.

1060

What is java string pool?

1012

What is a constructor overloading in java?

1050

What is a classloader in java?

1039

What is the difference between break and continue statements?

1047

What are the differences between heap and stack memory in java?

1069

What do you mean by an interface in java?

1036

Explain public static void main(string args[]) in java.

1000

What is an object in java and how is it created?

1061

What is collection class in java? List down its methods and interfaces.

970

What are the different types of inheritance in java?

992

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Un-Answered Questions { Core Java }

Can singleton class be serialized?

962

What is singleton class and how can we make a class singleton?

1105

How to make object serializable in java?

995

What is string builder in java?

1025

What are dot operator queries?

1114

What is jit and its use?

995

What is Session reduplication and how its done?

2044

Where and how can you use a private constructor?

1003

Can we print null in java?

1064

What is identifier with example?

1056

What are the important methods of java exception class?

1147

What is a default constraint?

1078

What is the difference between superclass and subclass?

1183

What are basic data types?

1107

What is java command?

1094

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