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 is string buffer better than string ?

Cyient,

1135

what is a thread pool in java and why is it used?

1011

how its run?

1075

what is enumset?

1134

what methods would you overwrite in java.lang.object class?

1016

what is the difference between future and callable interface in java?

1251

explain multi-threading in java?

1035

explain what is transient variable in java?

1149

when should you use stringbuilder class in a program?

991

what are abstract functions?

1037

design an lru cache in java?

1013

what is difference between equals and ==?

1073

how can you catch multiple exceptions in java?

Cyient,

1022

explain autoboxing in java?

1018

What is the purpose of a volatile variable?

1076

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Un-Answered Questions { Core Java }

Do you know why doesn't the java library use a randomized version of quicksort?

962

What is a predicate method?

1027

Is overriding possible in java?

969

What is java volatile?

1070

Can a string be null?

995

I want my class to be developed in such a way that no other class (even derived class) can create its objects. How can I do so?

987

Explain listiterator and methods in listiterator?

1029

How many threads does a core java have?

1081

What is a locale?

1159

What does split function do in java?

1028

What is java life cycle?

1017

What is nested loop? What is dangling else condition in it?

1098

Explain about wait() method?

1033

What is the use of private static?

1054

What is the purpose of default constructor?

1009

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