Introduction and example summary of Java programming reflection mechanism

This article illustrates the usage of Java programming reflection mechanism. Share with you for your reference, as follows:

Reflection: dynamically obtain classes (bytecode files, such as person. Class in this article) and run their members. Reflection may be encountered a little less in the development of Android application layer, but for small partners who want to get through the bottom layer, they must master the operation.

Entity class

Person. java

Method for dynamically obtaining bytecode file

In this article, in order to make the blog posts look concise, all exceptions are thrown and import is omitted, the same below.

Get classes dynamically and create objects

Get the class dynamically and assign values to member variables

Get classes dynamically and execute methods

This is the basic usage of reflection. When we can't create an object normally, we can create an object through the bytecode file of the object and execute the methods therein. Have you learned??

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