BAEL-812: List of Rules Engines in Java (#2319)

* spring beans DI examples

* fix-1: shortening examples

* List of Rules Engines in Java

* BAEL-812: Openl-Tablets example added

* BAEL-812: artifacts names changed

rulebook/pom.xml

@@ -0,0 +1,15 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+	<modelVersion>4.0.0</modelVersion>
+	<groupId>com.baeldung.rulebook</groupId>
+	<artifactId>rulebook</artifactId>
+	<version>1.0.0-SNAPSHOT</version>
+
+	<dependencies>
+		<dependency>
+		  	<groupId>com.deliveredtechnologies</groupId>
+		    <artifactId>rulebook-core</artifactId>
+		    <version>0.6.2</version>
+		</dependency>
+	</dependencies>
+</project>

rulebook/src/main/java/com/baeldung/rulebook/HelloWorldRule.java

@@ -0,0 +1,17 @@
+package com.baeldung.rulebook;
+
+import com.deliveredtechnologies.rulebook.lang.RuleBookBuilder;
+import com.deliveredtechnologies.rulebook.model.RuleBook;
+
+public class HelloWorldRule {
+    public RuleBook<Object> defineHelloWorldRules() {
+
+        return RuleBookBuilder.create()
+            .addRule(rule -> rule.withNoSpecifiedFactType()
+                .then(f -> System.out.print("Hello ")))
+            .addRule(rule -> rule.withNoSpecifiedFactType()
+                .then(f -> System.out.println("World")))
+            .build();
+
+    }
+}

rulebook/src/main/java/com/baeldung/rulebook/Launcher.java

@@ -0,0 +1,12 @@
+package com.baeldung.rulebook;
+
+import com.deliveredtechnologies.rulebook.FactMap;
+
+public class Launcher {
+
+    public static void main(String[] args) {
+        HelloWorldRule ruleBook = new HelloWorldRule();
+        ruleBook.defineHelloWorldRules()
+            .run(new FactMap<>());
+    }
+}