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Java reflection - field class use
2022-01-27 00:57:15 【Mssyaa】
Field As an operation class in the corresponding class or object in the reflection, or called an attribute
Java SE 8 Of Docs Say so ：A Field provides information about, and dynamic access to, a single field of a class or an interface. The reflected field may be a class (static) field or an instance field.
The simple understanding is ： We can go through Field Class to class or object field Dynamic operation .
- About Field Some of the ways ：
A simple case ：
Something to say ：
- setAccessible Method . yes Field Inherited from AccessibleObject class ,AccessibleObject yes Field、Method、Constuctor The parent of a class . Simple understanding means If the type is private Embellished , You can't have direct access to , You need to set the access permission to true. If it is public You don't need to set .
- set and get When calling, you need to ensure that you can access , Otherwise, if you can't access it, throw IllegalAccessException.
Make a general toString(Object obj) Method
Be careful ：
There's a Array class , yes java.lang.reflect Package the next array operation class . The meaning of the call in the code is not difficult to understand . No explanation
- Calling class
author[Mssyaa],Please bring the original link to reprint, thank you.
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