Java - when changing from jre 1.6 to 1.7 DocumentBuildFactory fails

Java - when changing from jre 1.6 to 1.7 DocumentBuildFactory fails

I am trying to change a project to work on jre 1.7. But when I change the
referenced library, I get an error with the following:
DocumentBuildFactory documentBuildFactory = (DocumentBuildFactory) = new
org.apache.xerces.jaxp.DocumentBuilderFactoryImpl();
Any ideas why? as I didn't think it was deprecated.