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The document introduces Wattzon, a free online tool that helps users measure and understand their energy consumption, from both end-user and developer perspectives. It discusses various components like Holmz, which serves as a backend for other systems and includes a sophisticated formula language, as well as Scala-ORM, which provides a lightweight object-relational mapping layer. Additionally, it highlights the difficulties in handling Java collections in Scala without using the Javabridge utility for improved interoperability.



































