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,

1123

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

1003

how its run?

1065

what is enumset?

1124

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

1002

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

1234

explain multi-threading in java?

1030

explain what is transient variable in java?

1144

when should you use stringbuilder class in a program?

981

what are abstract functions?

1028

design an lru cache in java?

1004

what is difference between equals and ==?

1065

how can you catch multiple exceptions in java?

Cyient,

1015

explain autoboxing in java?

1006

What is the purpose of a volatile variable?

1060

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Un-Answered Questions { Core Java }

What is string syntax?

1054

How many ways can an argument be passed to a subroutine and explain them?

1029

What is map and hashmap in java?

1064

What is sizeof () operator?

977

How do we access static members in java?

1110

What is use of map in java?

1011

What are the advantages of java over cpp?

1072

How many threads does a core java have?

1070

What is the role of garbage collector in java?

969

What is tcp and udp?

1016

What is the arraylist in java?

1053

What is var keyword ?

1190

What is difference overloading and overriding?

1170

What are the practical benefits, if any, of importing a specific class rather than an entire package (e.g. Import java.net.* Versus import java.net.socket)?

1114

What is instance example?

952

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