Shulou(Shulou.com)06/01 Report--

Today, the editor will share with you the relevant knowledge points about how to use the reflective framework Reflections in Java. The content is detailed and the logic is clear. I believe most people still know too much about this knowledge, so share this article for your reference. I hope you can get something after reading this article. Let's take a look.

Using Reflections, you can easily obtain the following metadata information:

1) get all the subclasses of a type; for example, one parent class is TestInterface, and you can get all the subclasses of TestInterface.

2) get all types / field variables of an annotation, and support the matching of annotation parameters.

3) use regular expressions to get all matching resource files

4) get a specific signature method.

The common uses are:

Introduce the dependency jar org.reflections reflections 0.9.10 project to use: / / initialize the utility class Reflections reflections = new Reflections (new ConfigurationBuilder (). ForPackages (basePackages) .addScents (new SubTypesScanner ()). AddScanners (new FieldAnnotationsScanner (); / / get the class Set corresponding to the type comments under a package

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