Thread: Graph class, ToString help.

Hello,

I have an assignment that I'm working on, I have completed every thing but one part, the toString of the Graph Class. I am having a hard time creating my toString.

The professor wants us to use both the vertexIterator and the outEdges methods in the Graph class to represent our toString. Here is the code I wrote in the Graph class.

    import java.util.*;
    public class Graph
   {
      private List<Edge> outEdge;
      private List<Vertex> verticies; 
      private List<Edge> edges;
      private int numberEdges;
      private int numberVertices;
 
 
       public Graph() 
      {
         numberVertices = 0;
         numberEdges = 0;
         verticies = new ArrayList<Vertex>();
         edges = new ArrayList<Edge>();
 
      }
       public void addVertex(Vertex v) 
      {
         numberVertices++;
         verticies.add(v);
         outEdge = v.getAdjacentList();
      }
       public void addEdge(Edge e) 
      {
         numberEdges++;
         edges.add(e);
         outEdge.add(e);
 
      }
 
       public int numVertices() 
      {
         return numberVertices;
      }
 
       public int numEdges()
      {
         return numberEdges;
      }
 
       public Iterator outEdges(Vertex v)
      {
         //outEdge = v.getAdjacentList();       
         return v.outEdges();
      }
 
       public Iterator vertexIterator()
      {
         return verticies.iterator();
      }
 
       public String toString()
      {
         StringBuffer tmp = new StringBuffer();
 
 
         for(Iterator vIterator = vertexIterator(); vIterator.hasNext(); )
            Vertex v = (Vertex) vIterator.next();   	   
         tmp.append("outgoing edges from vertex: ");
         for (Iterator it = v.outEdges(v); it.hasNext(); ) 
         {
            Edge s = (Edge)it.next(); 
            tmp.append(s);
         } 
         return tmp.toString();
      }
 
   }

This is the error message I'm getting

Graph.java:68: not a statement
Vertex v = (Vertex) vIterator.next();
^
Graph.java:68: ';' expected
Vertex v = (Vertex) vIterator.next();
^
2 errors

This is literally the final part of my project. I don't know how to get the Vertex section correct. Any help will be greatly appreciated.

If you need the rest of my code, I can provide it.

Hello johnjames!
The {} are missing after the for loop.

Thank You for your responses andreas90 and copeg! So simple. Now I gotta rework my toString code so it can print the proper output.

If I have anymore questions about this toString, I will definitely ask in here.