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Core Java Interview Questions and Answers

Ques 181. What is reflection?

Ans. Reflection allows programmatic access to information about the fields, methods and constructors of loaded classes, and the use reflected fields, methods, and constructors to operate on their underlying counterparts on objects, within security restrictions.

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Ques 182. What is the base class for Error and Exception?
Ans. Throwable
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Ques 183. What is the byte range?
Ans. 128 to 127
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Ques 184. What is the implementation of destroy method in java.. is it native or java code?
Ans. This method is not implemented.
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Ques 185. What is a package?
Ans. To group set of classes into a single unit is known as packaging. Packages provides wide namespace ability.
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