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 do you mean by compiler?

999

How can I become a good programmer?

929

What are jee technologies?

969

What do you mean by mnemonics?

1004

What is not object oriented programming?

880

What does opcode mean?

1013

Is int primitive data type?

893

Is binary a low level language?

876

What is jee6?

1025

What is application system?

901

How do listeners work?

990

What is a class component?

1125

Can we extend immutable class?

950

What is high level language in computer?

980

What is assembly used for?

974

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Un-Answered Questions { Core Java }

A person says that he compiled a java class successfully without even having a main method in it? Is it possible?

1002

What is widening and narrowing in java? Discuss with an example.

997

Why we go for collections in java?

928

What is callable java?

927

What is Gang of four design patterns

995

What is a byte string?

1060

How is string immutable in java?

998

How many bytes is 255 characters?

931

Why main function is static?

1154

Explain different types of thread priorities ?

1044

Where is const variable stored?

892

How to disable caching on back button of the browser?

1018

What is a singleton in genetics?

1007

What is the purpose of a default constructor?

1049

Can we override constructor in java?

1046

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