Abstract
Mobile devices nowadays become more and more powerful. The improvement of hardware allows the mobile devices to run various applications. Java is one of the most widely used programming languages in developing mobile applications. For example, most applications on Android are written in Java. On the Internet, we can find many games or applications developed for feature phones or smart phones using Java. However, mobile devices are usually powered by battery, and power consumption becomes one of the most important design issues for mobile devices. To help ordinary Java developers develop energy-efficient Java programs, we introduce in this thesis a method-level energy profiling tool that can produce breakdown of energy consumption of Java applications. The tool can help the Java developers to understand how their Java applications consume energy. Furthermore, the information provided by the tool can be used as references to help optimize the energy efficiency of the Java programs.