Java Programming for Mobile Applications

This chapter introduces Java programming for mobile applications. It also introduces the mobile software development tool Android Studio, and then provides three mobile example programs, and finally presents the deployment of mobile application programs. The chapter presents Massachusetts Institute of Technology (MIT) App Inventor, another popular way of developing Android applications. It describes the next‐generation mobile network technology, 5G, and outlines how 5G works and what it can be used for. The chapter shows how to use Android Studio to develop mobile phone applications— apps —for Android phones. 5G's small cells have a size of a few hundred meters, compared with several kilometers of 4G/3G/2G cells. The Multiple‐Input, Multiple‐Output describes wireless systems that use two or more transmitters and receivers to send and receive more data at once. Beamforming is designed for base stations to identify the most efficient data‐delivery route to a particular user and to reduce interference for nearby users in the process.