Eclipse 4 (to be released later in 2012)  Tutorials: From Dr. Jonas Helming (part 1, 2, 3, and 4)

EMF (Eclipse Modeling Framework):

• Good Tutorials:  From Dr. Jonas Helming and Mr. Lars Vogel 
• EMF References: at IBM,  Eclipse
• Android App Development with Acceleo using  EMF (free download)

UML2 and XSD Help at Eclipse

References (with keywords and usefulness rankings):

• Well-Grounded Java Developer, by B.J. Evans and M. Verburg, Manning, 2012. Java 7 (A), JVM (A), Stack Architecture (B)
• EMF Eclipse Modeling Framework, by D. Steinberg et al., 2009, Addison-Wesley, EMF (A), Ecore (A), UML(B)
• Apache TomCat 7, by A. Vukotic and M. Goodwill, Apress, 2011