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

Core Java Interview Questions

Questions Answers Views Company eMail

Why do we need hashset in java?

1035

What is default size of arraylist in java?

1147

What is an off by one error in java?

950

Which sorting algorithm is best in java?

976

What is use of map in java?

1011

What is the default size of arraylist in java?

1122

What is heterogeneous in java?

959

What is array initialization in java?

1087

What is the order of arraylist in java?

1130

What is immutability in java?

1075

What is arrays aslist in java?

951

What is the use of toarray () in java?

1063

What is dynamic array in java?

1021

What is treeset in java?

994

What is the use of arrays tostring () in java?

1039

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Un-Answered Questions { Core Java }

What is operator overloading. Is it is supported in java?

1026

Can string be considered as a keyword?

1031

Can we override compareto method?

944

What are jee technologies?

1010

Explain, java is compatible with all servers but not all browsers?

1059

What is mean by collections in java?

1167

What is thread life cycle in java?

1059

Explain the difference between arraylist and linkedlist in java?

980

What class of exceptions are generated by the java run-time system?

1188

What is string in java? String is a data type?

1014

Can we have a try block without catch block?

981

Explain java coding standards for variables ?

1168

What is floating data type?

979

Can this keyword be used to refer static members?

1025

Can we sort array in java?

944

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