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 decalarations?

1061

What are facelets templates?

979

what is the purpose of using rmisecuritymanager in rmi?

916

What is the tradeoff between using an unordered array versus an ordered array?

1161

Why we override equals() method?

980

What is the advantage of preparedstatement over statement?

1046

What is the default size of load factor in hashing based collection?

986

What is difference between jdk,jre and jvm?

1047

What is the difference between processes and threads?

992

What is the main difference between java platform and other platforms?

997

What is the difference between sleep and wait in java?

901

Explain java heap space and garbage collection?

1005

What is meant by binding in rmi?

956

Can we call the run() method instead of start()?

984

How do weakhashmap works?

1092

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Un-Answered Questions { Core Java }

What is default constructors?

936

Why does java have two ways to create child threads?

908

What is the difference between jvm and jre? What is an interface?

1014

How do you write a good declaration?

907

Which is the best sorting technique in java?

930

What do you know about the garbate collector?

977

What do you understand by copy constructor in java?

880

What is the purpose of the strictfp keyword?

1109

Is arraylist dynamic in java?

930

What classes of exceptions may be caught by a catch clause in java programming?

1113

What does the three dot emoji mean?

1050

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

990

What is pangram in java?

963

How to solve the problem of generating the unique hash keys with hash function?

1855

What is the difference between error and an exception?

1060

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