Shulou(Shulou.com)06/03 Report--

This article mainly introduces "how to realize automatic attribute assignment". In daily operation, I believe many people have doubts about how to realize automatic attribute assignment. The editor consulted all kinds of materials and sorted out simple and easy-to-use operation methods. I hope it will be helpful to answer the doubt of "how to realize automatic attribute assignment"! Next, please follow the editor to study!

Property automatically sets the solution

After analysis, it has been confirmed that the problem with the current simple Java class operation lies, and for developers, they need to find a solution to automatically set the attribute content, so the setting at this time is strongly recommended to describe the corresponding type in the form of a string.

1. When developing a program, the String string can describe a lot of content, and it is also up to the developer to define the structure of the string. The following is in the form of "attribute name: content | attribute name: content |" to initialize the attributes in the simple Java class.

2. The basic structure of class design: a special ClassInstanceFactory class should be responsible for all reflection processing, that is, receiving the reflection object and the property content to be set, and getting the instantiated object of the specified class at the same time.

Reflection and simple Java classes

3. The basic structure of the design:

Public class JavaAPIDemo {public static void main (String [] args) throws Exception {String value= "ename:Smith | job:Clerk"; Emp emp = ClassInstanceFactory.create (Emp.class, value); System.out.println ("name:" + emp.getEname () + ", position:" + emp.getJob ()) }} class ClassInstanceFactory {private ClassInstanceFactory () {} / * instantiate the creation method of the object, which can be based on the passed string structure: "attribute: content | property: content" * @ param clazz reflects the Class object to be instantiated With Class, you can reflect the property content of the instantiated object * @ param value to be set to the object * @ return A Java object that has already configured the property content * / public static T create (Class clazz,String value) {return null }}

Then in the current development, what needs to be improved is the ClassInstanceFactory.create () processing method.

At this point, the study on "how to realize automatic attribute assignment" is over. I hope to be able to solve everyone's doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.