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Core Java Interview Questions
Questions Answers Views Company eMail

Which class is the immediate superclass of the Container class?

1 5786

Name the immediate superclass of the MenuComponent class?

1 3409

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

1 3464

Which containers may have a MenuBar?

1 3781

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

3 5052

Which containers use a FlowLayout as their default layout?

3 6091

Which java.util classes and interfaces support event handling?

2 10380

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

3 8792

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

2 3379

Name the package that always imported by default?

4 10394

Who developed JScript language?

3 4569

Is Java is 100% pure OOPS? Explain?


27 26038

Why are the methods of the Math class are static?

1 7206

Does Java support multiple Inheritance?

12 15876

What are null interfaces? Give some examples?

2 6120

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Un-Answered Questions { Core Java }

What is bool mean?


What are the differences between abstract class and interface?


Is void a return type?


Difference between ‘>>’ and ‘>>>’ operators in java?


What are the important features of Java 11 release?


What is super?


Differentiate between the constructors and methods in java?


Can a class be a super class and a sub-class at the same time? Give example.


What is the difference between error and an exception?


What is the final class modifier?


Can we use a default constructor of a class even if an explicit constructor is defined?


What is 16 bits called?


How many bytes is 255 characters?


What is type inference in java8?


how to convert Java project into Maven ?