Instrucciones básicas de Java
30 Cheatsheets & Infographics For Software Developers And yes, I have this printed out and put into a laminated paper protector. This is a nice Java reference.
If you're looking to learn a programming language that's cross-platform and easily accessible, Java is one of the most practical languages out there. This handy cheat sheet helps you keep track of the basics while you begin to learn.: