The MongoDB service needs to be running before you can proceed. The latest Java JDK must be properly installed and configured beforehand. The system requirements are minimal:īoth MongoDB and the MongoDB Java driver must be properly configured beforehand. Prerequisitesīefore we get started with our examples, let’s take a quick look at the prerequisites for this task. In this article, we’ll explain how to perform aggregation in MongoDB using Java. Fortunately, aggregating MongoDB documents in Java is a simple process, and the examples we provide will make it easy to get started. ![]() In these cases, you’ll want to use aggregation to accomplish the task. When you query MongoDB for data, there may be times that you want to group your results and provide metrics such as total counts or averages.
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