--- layout: default title: Easy rules • Open source Java™ rules engine. overview: true ---

Open source Java™ rules engine.

Lightweight

A tiny jar with no dependencies and a lot of features!

Get started →

POJO based

Turn your POJOs into business rules with a couple of annotations.

Read documentation →

Simple yet powerful

Easy rules provides a simple API to get you up and running quickly.

2 minutes tutorial →

Then, fire it!

public class Test {
    public static void main(String[] args) {

        // create a rules engine
        AnnotatedRulesEngine rulesEngine =
                            new AnnotatedRulesEngine();
        //register the rule
        rulesEngine.registerRule(new MyRule());
        //fire rules
        rulesEngine.fireRules();
    }
}

First, define your rule..

@Rule (name = "my awesome rule" )
public class MyRule {

    @Condition
    public boolean when() {
        return true;
    }
    @Action
    public void then() {
        System.out.println("Easy Rules rocks!");
    }
}

License

Easy Rules is open source, hosted on GitHub and is released under the terms of theMIT License.

Credits

Many thanks to YourKit, LLC for providing a free license of YourKit Java Profiler to kindly support the development of Easy Rules.