Podcast
Questions and Answers
What can be used to examine or modify the runtime behavior of a class?
What can be used to examine or modify the runtime behavior of a class?
What is the main purpose of the Reflection API?
What is the main purpose of the Reflection API?
What is a disadvantage of using reflection?
What is a disadvantage of using reflection?
What is the main purpose of java reflection?
What is the main purpose of java reflection?
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What is usually recommended when using reflection?
What is usually recommended when using reflection?
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Study Notes
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Reflection is a process of examining or modifying the run time behavior of a class at run time.
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The java.lang.Class class provides many methods that can be used to get metadata, examine and change the run time behavior of a class.
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The java.lang and java.lang.reflect packages provide classes for java reflection.
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The Reflection API is mainly used in:
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getting the object of Class class
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getting the instance of Class class
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using the .class syntax
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determining the class object
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using reflection, one can break the principles of encapsulation.
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Reflection is an advanced feature that can be used by programmers or developers who have a good knowledge of the basics of the language.
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Reflection can be used to get information about the structure of objects or the methods that are implemented by objects.
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Reflection can be slow because it has to perform a lot of operations on the objects that it is looking at.
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It is usually advisable to avoid using reflection because it can slow down the application.
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Description
Learn about the Java Reflection API, its capabilities, and its impact on runtime behavior. Understand when to use reflection and its potential drawbacks for application performance.
