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

Core Java Interview Questions

Questions Answers Views Company eMail

What are the types of strings?

1029

What is the difference between char and char *?

1073

What is ph and buffers?

1000

Is char * a string?

985

Is hashmap thread safe?

983

Is stringwriter thread safe?

994

How do you use find and replace?

951

What is integer valueof?

1098

Why string is immutable with example?

967

What is the difference between replace and replace all?

1021

What is indexof?

978

How do you define a variable?

938

What is the difference between and ?

1010

What is regex used for?

990

What is a subsequence of a string?

1062

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Un-Answered Questions { Core Java }

Difference between method overloading and method overriding in java ?

1079

What is the meaning of 3 dots in java?

1160

Can you tell me range of byte?

990

Can we write method inside a method in java?

984

How do you add an element to a set in java?

1025

Is it possible to compare various strings with the help of == operator?

989

Is singleton thread safe in java?

983

What are the rules for variable declaration?

965

What are accessor methods in java?

1006

Which api is provided by java for operations on set of objects?

1455

What is the gregoriancalendar class in java programming?

1038

Which collections are thread safe in java?

923

What is exception propagation?

1131

Differentiate storage classes on the basis of their scope?

1171

How do you square a number?

1263

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