Added a Node class

src/main/java/fr/nabil/Main.java

@@ -29,8 +29,6 @@ public class Main {
                 vrps.add(FileReader.readFile(p.toUri()));
             });
         }
-
-        System.out.println(vrps.getFirst().toString());
     }
 
 }

src/main/java/fr/nabil/data/Node.java

@@ -0,0 +1,62 @@
+package fr.nabil.data;
+
+public class Node {
+
+    private int id; // Site number
+    private int routeNumber; // Route as a whole and not as an arc
+
+    private Node previousNode;
+    private Node nextNode;
+    private int demand;
+
+    public Node(int id, int routeNumber, int demand, Node previousNode, Node nextNode) {
+        this.id = id;
+        this.routeNumber = routeNumber;
+        this.demand = demand;
+        this.previousNode = previousNode;
+        this.nextNode = nextNode;
+    }
+
+    public Node(int id, int demand) {
+        this.id = id;
+        this.demand = demand;
+    }
+
+    public void setAll(Node previousNode, Node nextNode, int routeNumber, int demand) {
+        this.previousNode = previousNode;
+        this.nextNode = nextNode;
+        this.routeNumber = routeNumber;
+    }
+
+    public int getId() {
+        return id;
+    }
+
+    public int getDemand() {
+        return demand;
+    }
+
+    public int getRouteNumber() {
+        return routeNumber;
+    }
+
+    public void setRouteNumber(int routeNumber) {
+        this.routeNumber = routeNumber;
+    }
+
+    public Node getNextNode() {
+        return nextNode;
+    }
+
+    public Node getPreviousNode() {
+        return previousNode;
+    }
+
+    public void setNextNode(Node nextNode) {
+        this.nextNode = nextNode;
+    }
+
+    public void setPreviousNode(Node previousNode) {
+        this.previousNode = previousNode;
+    }
+}