creating a simple rule engine in java

Question

I am exploring different ways to create a simple business rule engine in Java. I need to present the client with a simple webapp that lets him configure a bunch of rules. A

Answer 1

Another addition to this list is http://openl-tablets.org/ . It allows you to define rules in Excel, upload it to a Web based editor. It is very flexible and has built in ability to run tests against the rules with some data