import java.util.ArrayList; public class Segment { private ArrayList nodes; private Node rootNode; public Segment(){ this.nodes = new ArrayList<>(); } public void setNodes(ArrayList nodes){ this.nodes = nodes; } public void add(Node node){ nodes.add(node); } public ArrayList getNodes(){ return this.nodes; } public Node getRootNode() { return rootNode; } public void setRootNode(Node rootNode) { this.rootNode = rootNode; } }