modules/javafx.base/src/main/java/javafx/beans/property/ReadOnlyLongProperty.java

@@ -75,10 +75,11 @@
      * {@code ReadOnlyLongProperty} is created that is bound to
      * the {@code ReadOnlyProperty}.
      *
      * Note: null values will be interpreted as 0L
      *
+     * @param <T> The type of Number to be wrapped
      * @param property
      *            The source {@code ReadOnlyProperty}
      * @return A {@code ReadOnlyLongProperty} that wraps the
      *         {@code ReadOnlyProperty} if necessary
      * @throws NullPointerException