文章结束给大家来个程序员笑话：[M]
Using reflection is different from normal Java programming in that it works with metadata -- data that describes other data. The particular type of metadata accessed by Java language reflection is the description of classes and objects within the JVM. Reflection gives you run-time access to a variety of class information. It even lets you read and write fields and call methods of a class selected at run time.Reflection is a powerful tool. It lets you build flexible code that can be assembled at run time without requiring source code links between components.The Class object gives you all the basic hooks for reflection access to the class metadata. This metadata includes information about the class itself, such as the package and superclass of the class, as well as the interfaces implemented by the class. It also includes details of the constructors, fields, and methods defined by the class.Using reflection is different from normal Java programming in that it works with metadata -- data that describes other data. The particular type of metadata accessed by Java language reflection is the description of classes and objects within the JVM. Reflection gives you run-time access to a variety of class information. It even lets you read and write fields and call methods of a class selected at run time.
Reflection is a powerful tool. It lets you build flexible code that can be assembled at run time without requiring source code links between components.
The Class object gives you all the basic hooks for reflection access to the class metadata. This metadata includes information about the class itself, such as the package and superclass of the class, as well as the interfaces implemented by the class. It also includes details of the constructors, fields, and methods defined by the class.
文章结束给大家分享下程序员的一些笑话语录：
3G普不普及现在已经不是看终端了，而是看应用，有好的，便宜实用的应用，花1000多买个能用的智能手机应该不是什么难事。反过来说，你200元拿一个智能手机，没有好的应用，看个电影要几十元，也是没人用3G。
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原创文章 By
java和metadata
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