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 happens if a constructor is declared private?

1030

What are different types of expressions?

1113

Which is better arraylist or vector?

1020

What is a generic type?

1006

Is a string literal?

1092

Why is stringbuffer faster than string?

915

Why parsing is done?

977

What is string buffer?

935

Why is a string immutable?

999

What is append function?

993

What is object english?

1056

Is nan false?

974

What is a generic data type?

1030

What carriage return means?

961

Is string a datatype?

981

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Un-Answered Questions { Core Java }

What is polymorphism in java? What are the kinds of polymorphism?

1066

What is append in java?

1159

What’s meant by anonymous class?

1078

How hashmap works in java?

1039

How many functional interfaces does java 8 have?

1024

What does escaping a character mean?

1010

Is boolean a data type in java?

961

What is a parameter used for?

956

Can we nested try statements in java?

1095

Can we have more than one package statement in the source file?

1052

Explain access modifiers in java.

1031

What are the new features in java 8? Explain

949

What are the important features of Java 9 release?

994

What is lazy initialization in java?

1002

Is an array a vector?

1034

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