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Create a Java function using Visual Studio Code - Azure Functions
Learn how to create a Java function, then publish the local project to serverless hosting in Azure Functions using the Azure Functions extension in Visual Studio Code.
quickstart
11/03/2020

Quickstart: Create a Java function in Azure using Visual Studio Code

[!INCLUDE functions-language-selector-quickstart-vs-code]

In this article, you use Visual Studio Code to create a Java function that responds to HTTP requests. After testing the code locally, you deploy it to the serverless environment of Azure Functions.

Completing this quickstart incurs a small cost of a few USD cents or less in your Azure account.

Note

If Visual Studio Code isn't your preferred development tool, check out our similar tutorials for Java developers using Maven, Gradle and IntelliJ IDEA.

Configure your environment

Before you get started, make sure you have the following requirements in place:

Create your local project

In this section, you use Visual Studio Code to create a local Azure Functions project in Java. Later in this article, you'll publish your function code to Azure.

  1. Choose the Azure icon in the Activity bar, then in the Azure: Functions area, select the Create new project... icon.

    Choose Create a new project

  2. Choose a directory location for your project workspace and choose Select.

    [!NOTE] These steps were designed to be completed outside of a workspace. In this case, do not select a project folder that is part of a workspace.

  3. Provide the following information at the prompts:

    • Select a language for your function project: Choose Java.

    • Select a version of Java: Choose Java 8 or Java 11, the Java version on which your functions run in Azure. Choose a Java version that you've verified locally.

    • Provide a group ID: Choose com.function.

    • Provide an artifact ID: Choose myFunction.

    • Provide a version: Choose 1.0-SNAPSHOT.

    • Provide a package name: Choose com.function.

    • Provide an app name: Choose myFunction-12345.

    • Authorization level: Choose Anonymous, which enables anyone to call your function endpoint. To learn about authorization level, see Authorization keys.

    • Select how you would like to open your project: Choose Add to workspace.

  4. Using this information, Visual Studio Code generates an Azure Functions project with an HTTP trigger. You can view the local project files in the Explorer. To learn more about files that are created, see Generated project files.

[!INCLUDE functions-run-function-test-local-vs-code]

After you've verified that the function runs correctly on your local computer, it's time to use Visual Studio Code to publish the project directly to Azure.

[!INCLUDE functions-sign-in-vs-code]

[!INCLUDE functions-publish-project-vscode]

[!INCLUDE functions-vs-code-run-remote]

[!INCLUDE functions-cleanup-resources-vs-code.md]

Next steps

You have used Visual Studio Code to create a function app with a simple HTTP-triggered function. In the next article, you expand that function by adding an output binding. This binding writes the string from the HTTP request to a message in an Azure Queue Storage queue.

[!div class="nextstepaction"] Connect to an Azure Storage queue