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

Core Java Interview Questions

Questions Answers Views Company eMail

How do I get a substring?

978

What is basic syntax?

1039

Is integer a class?

1080

Why is string builder not thread safe?

1064

What is the instance of an object?

1195

Is string a wrapper class?

1016

What is the generic function?

986

Is string an object?

1118

How do you replace all in word?

1067

How do you know if a value is nan?

1059

Does printwriter create a file?

959

How do you use wildcards?

1061

What is difference between string and stringbuffer?

1105

What are the special characters?

971

What does it mean that strings are immutable?

1128

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Un-Answered Questions { Core Java }

Why is the main method declared static?

1137

Is boolean a data type in java?

961

What is final method in java?

1033

What are "class access modifiers" in Java?

1133

What are the types of web technologies?

1043

What is not object oriented programming?

949

What is jar?

1120

Which collection is best for sorting in java?

1126

What are the advantages of autoboxing?

1018

how its run?

1065

What is boolean example?

970

What is java ceil?

1033

Why is logger singleton?

1127

What is better - 'bit-shift a value' or 'multiply by 2'?

1191

What do negative exponents mean?

1045

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