declare variables final when possible

1 files changed, 3 insertions, 3 deletions

diff --git a/src/com.example.portfolio3/com/example/portfolio3/AdjMapGraph.java b/src/com.example.portfolio3/com/example/portfolio3/AdjMapGraph.java
index f12df6f..353f934 100644
--- a/src/com.example.portfolio3/com/example/portfolio3/AdjMapGraph.java
+++ b/src/com.example.portfolio3/com/example/portfolio3/AdjMapGraph.java
@@ -18,7 +18,7 @@ class AdjMapGraph extends AbstractGraph {
   private Map<Vertex, Map<Vertex, Edge>> outEdge = new HashMap<>();
 
   /// foo
-  public void insertEdge(Vertex v1, Vertex v2, int w) {
+  public void insertEdge(final Vertex v1, final Vertex v2, final int w) {
     Edge e = new Edge(v1,v2, w);
     if (!outEdge.containsKey(e.from()))
       outEdge.put(e.from(), new HashMap<Vertex, Edge>());
@@ -35,12 +35,12 @@ class AdjMapGraph extends AbstractGraph {
   }
 
   /// foo
-  public Collection<Edge> outEdge(Vertex v) {
+  public Collection<Edge> outEdge(final Vertex v) {
     return outEdge.get(v).values();
   }
 
   /// foo
-  public Integer getWeight(Vertex v1, Vertex v2) {
+  public Integer getWeight(final Vertex v1, final Vertex v2) {
     // constant time operation
     if(!outEdge.containsKey(v1))return null;
     if(!outEdge.get(v1).containsKey(v2))return null;