" Effective Java" (2nd Edition) Joshua Bloch

" Java Generics and Collections" Maurice Naftalin, Philip Wadler

" Java Concurrency in Practice" Brian Goetz, Tim Peierls, Joshua Bloch, Joseph Bowbeer, David Holmes, Doug Lea

" Dependency Injection" Dhanji R. Prasanna

" Java Reflection in Action" Ira R. Forman, Nate Forman