I picked these because the big box book resellers stock them (I think you're looking for background on things like primitives/autoboxing, java.util.concurrent,

I picked these because the big box book resellers stock them (I think you're looking for background on things like primitives/autoboxing, java.util.concurrent, the JVM's startup options, profiling/debug tools, and maybe tips that make rhickey's clojure source easier to read): http://www.amazon.com/Core-Java-TM-I-Fundamentals-8th/dp/0132354764/ http://www.amazon.com/Core-Java-TM-I-Fundamentals-8th/dp/013... http://www.amazon.com/Java-Good-Parts-Jim-Waldo/dp/0596803737/ http://www.amazon.com/Java-Good-Parts-Jim-Waldo/dp/059680373...