Eclipse Can't Find Latest Java 1.6 Methods for XMLOutputFactory

I'm trying to use the `newFactory()` method for `XMLOutputFactory`, which was added in Java 6. But Eclipse keeps flagging `newFactory()` as undefined for the type `XMLOutputFactory`. JRE7 is the only runtime installed and in the build path of new Java projects. The project itself only has JRE7 (JRE System Library) and Ivy set up. The error I keep getting is ``` The method newFactory() is undefined for the type XMLOutputFactory ``` Any ideas how to get Eclipse to accept `newFactory`? Pretty much just using `return XMLOutputFactory.newFactory()` as the only place where the function is called.