Mobile applications are hard enough to design and build without having to rewrite the app for multiple, often incompatible, platforms. Using GWT and PhoneGap this book will show you how you can use a language you already know, Java, to build mobile apps for multiple mobile platforms at once; even on platforms that do not natively support Java. Further, this book will show you how to access device features, design user interfaces that fit the constraints of mobile devices, then use these skills to build a full client/server application for all of the major mobile platforms.