Developing A Simple Pluggable Java Application
Most of the applications we use on daily basis are pluggable. Popular applications like Firefox, Eclipse, NetBeans, JEdit, Wordpress, Hudson are all pluggable. In fact, pluggability has played a major part in the success of most of these applications. Why not make the Java applications we develop pluggable as well? Yes, we get pluggability out of the box, if our applications are based on a rich client platform like NetBeans or Eclipse. But for some reasons if you decide not to use those platforms, it doesn’t mean that they should not be pluggable. In this article, we will learn how to write a simple pluggable application that will load it’s plugins dynamically.
The API
First, let us define a plugin interface that should be implemented by all the plugins of our application. We are going to keep it very simple. Create a project called “plugin-api” in your favorite IDE and create the interface “ApplicationPlugin”.
package com.pluggableapp.plugins.api;
public interface ApplicationPlugin
{
String getName();
void init();
}
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