Eclipse applications use a runtime based on a specification called OSGi. A software component in OSGi is called a bundle. An OSGi bundle is also always an Eclipse plug-in. Both terms can be used interchangeably. For example, a new plug-in can create new menu entries or toolbar entries.

-Java 1.5 (or higher) SE JDK

-Eclipse 4.2 (or any version) and the Drools plugin

As Drools is a BRMS (Business Rule Management System) written in Java, we will be covering how to add the desired plugins in this section. Considering maximum Java users use Eclipse, let’s see how to add the Drools 5.x.0 plugin in Eclipse.

Download the Binaries

Download the binaries from the following link:

http://download.jboss.org/drools/release/5.3.0.Final/

After the download is complete, extract the files to your hard disk.

Install the Software

Launch Eclipse and go to help→install new software. Click on Add as shown in the following screenshot.

Thereafter, click on Local as shown here and select "…/binaries/org.drools.updatesite".

Select Drools and jBPM and click Next.

Again click Next. Thereafter, accept the terms and license agreement and click Finish.

Upon clicking Finish, the software installation starts:

Post successful installation, you will get the following dialog box:

Click on yes. Once Eclipse restarts, go to Windows → Preferences

You can see Drools under your preferences. Your Drools plugin installation is complete now.