This sample application connects to a MongoDB deployment, seeds a small set of sample product documents, and retrieves one of them. Because the app inserts its own data, you don't need to load an external dataset.
Before you begin, complete the Atlas Get Started guide to create a free Atlas deployment and save your database user credentials.
You also need the following components installed in your development environment:
- JDK version 21 or later
- Maven
Clone this repository:
git clone https://github.com/mongodb/docs-get-startedNavigate into the java/hello-world project directory and compile the
application:
cd docs-get-started/java/hello-world
mvn compileSet your connection string as an environment variable, replacing
<connection string uri> with your connection string:
export MONGODB_URI="<connection string uri>"mvn compile exec:javaWhen you run the app, it inserts a few product documents into the
get_started.products collection, then queries and prints one of them:
{"_id": {"$oid": "..."}, "name": "Wireless Mouse", "category": "Electronics", "price": 24.99, "tags": ["wireless", "usb", "ergonomic"]}
You can run the app more than once. It clears the collection before each run, so the results stay consistent.
If you encounter an error or see no output, verify that you set the
MONGODB_URI environment variable correctly.