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

Core Java Interview Questions

Questions Answers Views Company eMail

Which class is the immediate superclass of the Container class?

1 7270

Name the immediate superclass of the MenuComponent class?

1 4847

To obtain design information about an object, which class in used?

1 4786

Which containers may have a MenuBar?

1 5525

In what type of containers, Border layout is a default layout?

3 7191

Which containers use a FlowLayout as their default layout?

3 8357

Which java.util classes and interfaces support event handling?

2 12581

To set the position and size of a component, which methods are used?

3 10850

What are the allowed, non-Unicode letter characters that can be used as the first character of an identifier?

2 5210

Name the package that always imported by default?

4 13293

Who developed JScript language?

3 6719

Is Java is 100% pure OOPS? Explain?

ANZ,

27 41742

Why are the methods of the Math class are static?

1 8849

Does Java support multiple Inheritance?

12 22005

What are null interfaces? Give some examples?

2 8071

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Un-Answered Questions { Core Java }

How is Object Oriented Programming different from Procedure Oriented Programming?

1059

What is public/private protected in java?

1057

What is bufferedwriter?

990

What is unicode in java?

942

What is difference between stringbuffer and string?

971

What is this keyword in java?

1047

What is vector?

1079

Does treeset use compareto?

987

What data type is true or false?

1056

Explain working of call by reference function invoking.

1038

Does java initialize arrays to zero?

1049

Can we declare a constructor as final?

1336

What are invisible components?.

2159

What is the best way to findout the time/memory consuming process?

1039

What are the Static and Dynamic Variables? Differentiate them.

1127

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