Head First Java, 3rd Edition - Bert Bates, Trisha Gee, Kathy Sierra

With this book, you'll learn the Java language with a unique method that goes beyond how-to manuals. Through puzzles, mysteries, and soul-searching interviews with famous Java objects, you'll quickly get up to speed on Java's fundamentals and advanced topics including lambdas, streams, generics, threading, networking, and the dreaded desktop GUI.