Changes for more abstraction

src/search/breadthfirstsearch/BreadthFirstSearch.java

@@ -0,0 +1,29 @@
+package search.breadthfirstsearch;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public class BreadthFirstSearch
+{
+    public Node breadthFirstSearch(List<Node> nodes, Node target)
+    {
+        var newNodes = new ArrayList<Node>();
+
+        for (Node node : nodes)
+        {
+            if (node.isTargetReached(target))
+            {
+                return node;
+            }
+
+            newNodes.addAll(node.generateSuccessors());
+        }
+
+        if (newNodes.isEmpty())
+        {
+            return breadthFirstSearch(newNodes, target);
+        }
+
+        return null;
+    }
+}

src/search/breadthfirstsearch/Main.java

@@ -0,0 +1,8 @@
+package search.breadthfirstsearch;
+
+public class Main
+{
+    public static void main(String[] args)
+    {
+    }
+}

src/search/breadthfirstsearch/Node.java

@@ -0,0 +1,9 @@
+package search.breadthfirstsearch;
+
+import java.util.List;
+
+public interface Node
+{
+    boolean isTargetReached(Node target);
+    List<Node> generateSuccessors();
+}