Web Reference: Feb 4, 2026 · In Java, some libraries make it easy to read and write JSON files. One popular library is Jackson. Add the Jackson library to the project. Include it manually or via Maven/Gradle. Now, let's create a simple Java project using Visual Studio Code and Maven. Open the command prompt and run the following commands to initialize a new Maven project. I would suggest that you just make a simple ArrayList with your objects, and then serialize them into JSON with a serializer (Using the Jackson library in the example below). In this article, we will learn to write/create a JSON file using Java. JSON has become the standard for data exchange for any kind of application. Java also has a collection of libraries helpful in creating and storing JSON files.
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