Mobile computing refers to the ability to use computing devices while on the move, providing users with constant access to information and applications. Java has played a significant role in the mobile computing landscape, especially in the development of Android applications.Mobile applications developed in Java, particularly for Android, often follow a structured architecture to enhance maintainability and scalability.A wide range of tools, frameworks, and techniques are included in Java mobile computing, with the goal of developing productive and successful mobile apps. Java robust base, large library, and ongoing community support make it an essential language in the mobile development ecosystem. Through an awareness of Java features and recommended practices, developers can use it to create cutting-edge and potent mobile apps that satisfy users in the rapidly evolving digital landscape of today.