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,

1 1212

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

1 1071

how its run?

1 1124

what is enumset?

1 1219

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

1 1075

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

1 1331

explain multi-threading in java?

1 1092

explain what is transient variable in java?

1 1198

when should you use stringbuilder class in a program?

1 1038

what are abstract functions?

1 1090

design an lru cache in java?

1 1057

what is difference between equals and ==?

1 1132

how can you catch multiple exceptions in java?

Cyient,

1 1072

explain autoboxing in java?

1 1060

What is the purpose of a volatile variable?

1 1114

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Un-Answered Questions { Core Java }

Write a program to print count of empty strings in java 8?

1071

What do you mean by an interface in java?

1084

How to sort array in descending order in java?

976

What is an object in java and how is it created?

1110

How to create a base64 decoder in java8?

1119

What are the differences between heap and stack memory in java?

1112

What is java string pool?

1068

Write a program to find the whether a number is an Armstrong number or not?

1085

What is the difference between break and continue statements?

1107

Differentiate between static and non-static methods in java.

1106

Explain public static void main(string args[]) in java.

1053

What is a constructor overloading in java?

1113

Realized?

2239

What is the difference between equals() and == in java?

1021

explain different ways of using thread? : Java thread

1068

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