diff --git a/src/java/org/apache/commons/graph/visitor/DFSVisitor.java b/src/java/org/apache/commons/graph/visitor/DFSVisitor.java
index a790f42..2f09274 100644
--- a/src/java/org/apache/commons/graph/visitor/DFSVisitor.java
+++ b/src/java/org/apache/commons/graph/visitor/DFSVisitor.java
@@ -65,22 +65,37 @@ import org.apache.commons.graph.VStack;
  * this class (and of course its descendants) may be passed to a DFS
  * object.
  *
- * @version $Id: DFSVisitor.java,v 1.1 2001/11/29 14:17:34 jvanzyl Exp $
+ * @version $Id: DFSVisitor.java,v 1.2 2001/12/01 19:12:14 jvanzyl Exp $
  * @author <A HREF="http://www.inf.fu-berlin.de/~dahm">M. Dahm</A> 
  * @see DFS
  */
 public class DFSVisitor extends DefaultVisitor {
-  private int    time;  // Global time
-  private VStack stack; // Stack to remember predecessors
+  
+  /**
+   * Global time.
+   */
+  private int time;
+  
+  /**
+   * Stack to remember predecessors.
+   */
+  private VStack stack;
 
-  public DFSVisitor() {}
+  /**
+   * Default constructor.
+   */
+  public DFSVisitor()
+  {
+  }
 
   public void discoverGraph(Graph g) {
     int      size     = g.getNoVertices();
     Vertex[] vertices = g.getVertexArray();
 
     for(int i=0; i < size; i++)
+    {
       vertices[i].setPredecessor(null);
+    }              
 
     time  = 0; // Reset timer
     stack = new VStack(size);
@@ -88,9 +103,13 @@ public class DFSVisitor extends DefaultVisitor {
 
   public void discoverVertex(Vertex v) {
     if(stack.empty()) // First node
+    {
       v.setPredecessor(null);
+    }      
     else
+    {
       v.setPredecessor(stack.top());
+    }      
 
     stack.push(v);
     v.setDiscoveryTime(time++);