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 are the main differences between the java platform and other platforms?

1075

Why does java not support pointers?

1125

How can you make a class serializable in java?

1006

How to perform bubble sort in java?

1007

What is jrmp?

978

How do I convert a numeric ip address like 192.18.97.39 into a hostname like java.sun.com?

1023

Can we override the private methods?

1025

What is the difference between abstraction and encapsulation?

1061

Which class is the superclass for all the classes?

1038

What is the difference between the final method and abstract method?

1069

Can finally block be used without a catch?

1025

Why is inheritance used in java?

1140

What is the meaning of immutable regarding string?

982

What is deserialization?

1041

Write a java program to count the number of words present in a string?

993

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Un-Answered Questions { Core Java }

Can we use different return types for methods when overridden?

1013

What do you mean by jjs in java8?

1021

explain autoboxing in java?

1021

Difference between a process and a program?

1130

What is difference between path and classpath variables?

1109

Name four container classes.

1005

Explain about features of local inner class?

1145

Explain how to convert any java object into byte array.

988

What is the equal sign?

1139

Explain the significance of listiterator.

1122

What is the use of System class?

1178

Give me example of derived data types.

1180

Can we extend immutable class?

1007

What is unmodifiable list in java?

972

What is data member in java?

1074

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