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This article mainly explains the "java reflection calls the specified properties of the method", the article explained the content is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "java reflection calls the specified properties of the method" it!

Description

1. In the reflection mechanism, you can manipulate the properties in the class directly through the Field class.

2. Set and get the content of the property through the set () and get () methods provided by the Field class.

Example

@ Testpublic void testField () throws Exception {Class clazz = Person.class; / / create an object of the runtime class Person p = (Person) clazz.newInstance (); / / 1. GetDeclaredField (String fieldName): get the attribute Field name = clazz.getDeclaredField ("name") of the specified variable name in the runtime class; / / 2. Make sure that the current property is accessible name.setAccessible (true); / / 3. Get and set this attribute value of the specified object name.set (p, "Tom"); System.out.println (name.get (p));} Thank you for reading, the above is the content of "java reflection calls the method of specified properties". After the study of this article, I believe you have a deeper understanding of the problem of java reflection calling the specified properties, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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