Introduction to Neo4j (#1098)

* Nashorn

* Nashorn x2

* Nashorn added trailing newlines

* Cleanup

* Formatted script lines

* Change system outs to asserts

* Change Nashorn to be Junit tests

* Remove empty test

* Added Neo4j section

* Revert NashornTest

core-java/src/main/java/com/baeldung/graph/Car.java

@@ -0,0 +1,50 @@
+package com.baeldung.graph;
+
+import org.neo4j.ogm.annotation.GraphId;
+import org.neo4j.ogm.annotation.NodeEntity;
+import org.neo4j.ogm.annotation.Relationship;
+
+/**
+ * @author Danil Kornishev (danil.kornishev@mastercard.com)
+ */
+@NodeEntity
+public class Car {
+    @GraphId
+    private Long id;
+
+    private String make;
+
+    @Relationship(direction = "INCOMING")
+    private Company company;
+
+    public Car(String make, String model) {
+        this.make = make;
+        this.model = model;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getMake() {
+        return make;
+    }
+
+    public void setMake(String make) {
+        this.make = make;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    private String model;
+}

core-java/src/main/java/com/baeldung/graph/Company.java

@@ -0,0 +1,45 @@
+package com.baeldung.graph;
+
+import org.neo4j.ogm.annotation.NodeEntity;
+import org.neo4j.ogm.annotation.Relationship;
+
+/**
+ * @author Danil Kornishev (danil.kornishev@mastercard.com)
+ */
+@NodeEntity
+public class Company {
+    private Long id;
+
+    private String name;
+
+    @Relationship(type="owns")
+    private Car car;
+
+    public Company(String name) {
+        this.name = name;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public Car getCar() {
+        return car;
+    }
+
+    public void setCar(Car car) {
+        this.car = car;
+    }
+}