How create plugins in java and access then from the app

How can I create plugins for a Java app. And how do I need in my app to access those plugins??

Generally speaking, any sort of plugin is simply an implementation of some defined or set of defined interfaces that is loaded at runtime and invoked based on some event, configuration or other such mechanism. Java plugins can be implemented simply as .jar or individual classes that implement the interface(s). The application loads these (perhaps using separate, specifically defined class loaders) and is responsible for knowing how and when to invoke their method(s).
The trick, of course, is defining the interfaces to be supported by the app and implemented by the plugin and to define a set of events, etc. that would cause these to be invoked. The mechanics of loading the classes, instatiating the instances as need, etc. is fairly basic Java programming.
Chuck

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How create plugins in java and access then from the app

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