diff -r 9ec9d0a07e28 javafx-fxml/src/javafx/fxml/JavaFXBuilderFactory.java
--- a/javafx-fxml/src/javafx/fxml/JavaFXBuilderFactory.java	Fri Aug 19 10:19:08 2011 -0700
+++ b/javafx-fxml/src/javafx/fxml/JavaFXBuilderFactory.java	Fri Aug 19 21:09:51 2011 -0700
@@ -197,7 +197,7 @@
 
         @Override
         public Object get(Object key) {
-            throw new UnsupportedOperationException("Not supported yet.");
+            return getTemporaryContainer(key.toString());
         }
 
         @Override
@@ -368,6 +368,11 @@
     }
 
     private Method findMethod(String name) {
+        if (name.length() > 1
+            && Character.isUpperCase(name.charAt(1))) {
+            name = Character.toUpperCase(name.charAt(0)) + name.substring(1);
+        }
+
         for (Method m : builderClass.getMethods()) {
             if (m.getName().equals(name)) {
                 return m;
diff -r 9ec9d0a07e28 javafx-ui-charts/src/javafx/scene/chart/XYChart.java
--- a/javafx-ui-charts/src/javafx/scene/chart/XYChart.java	Fri Aug 19 10:19:08 2011 -0700
+++ b/javafx-ui-charts/src/javafx/scene/chart/XYChart.java	Fri Aug 19 21:09:51 2011 -0700
@@ -1071,7 +1071,11 @@
             }
         };
         public final X getXValue() { return xValue.get(); }
-        public final void setXValue(X value) { xValue.set(value); }
+        public final void setXValue(X value) {
+            xValue.set(value);
+            // handle the case where this is a init because the default constructor was used
+            if (currentX.get() == null) currentX.setValue(value);
+        }
         public final ObjectProperty<X> xValueProperty() { return xValue; }
 
         /** The generic data value to be plotted on the Y axis */
@@ -1100,7 +1104,11 @@
             }
         };
         public final Y getYValue() { return yValue.get(); }
-        public final void setYValue(Y value) { yValue.set(value); }
+        public final void setYValue(Y value) {
+            yValue.set(value);
+            // handle the case where this is a init because the default constructor was used
+            if (currentY.get() == null) currentY.setValue(value);
+        }
         public final ObjectProperty<Y> yValueProperty() { return yValue; }
 
         /**
@@ -1185,6 +1193,8 @@
 
         // -------------- CONSTRUCTOR -------------------------------------------------
 
+        public Data() {}
+
         public Data(X xValue, Y yValue) {
             setXValue(xValue);
             setYValue(yValue);