As we all know, mobile devices are the future of personal computing. This book gives the readers the way to run Java programs in their smart phones and tablets. After understanding the concept, readers can enter and run Java source code anywhere, anytime. Generally, desktops or laptops are required to run Java programs. However in the advent of mobile technology, smart phone can be used for running Java programs in place of traditional devices such as desktop and laptop computers. Authors have used the tool namely AIDE to show how Java programs can be run on smart phone. Also some applications and programs have been illustrated to show the power of using smart phone in AIDE.