Create ShapeFactory.java

Structural/Flyweight/java/shape-circle-demo/ShapeFactory.java

@@ -0,0 +1,20 @@
+import java.util.HashMap;
+
+public class ShapeFactory {
+
+   // Uncomment the compiler directive line and
+   // javac *.java will compile properly.
+   // @SuppressWarnings("unchecked")
+   private static final HashMap circleMap = new HashMap();
+
+   public static Shape getCircle(String color) {
+      Circle circle = (Circle)circleMap.get(color);
+
+      if(circle == null) {
+         circle = new Circle(color);
+         circleMap.put(color, circle);
+         System.out.println("Creating circle of color : " + color);
+      }
+      return circle;
+   }
+}