The Java 11 Runtime

The Cloud Functions Java 11 runtime is based on Java version 11.0.6. For instructions on how to prepare your local machine for Java development, see Setting Up a Java Development Environment.

To get started with Java on Cloud Functions, see the Quickstart.

Selecting the runtime

You can select the Java 11 runtime for your function during deployment.

gcloud

If you are using the gcloud command-line tool, you can specify the runtime by using the --runtime parameter. The --entry-point flag specifies the fully qualified class name (FQN). For example:

gcloud functions deploy NAME --entry-point FQN --runtime java11 --trigger-http

For more arguments that you can specify when you are deploying, see Deploy using the gcloud tool.

Console

If you are using the Cloud Console, you can select the runtime when you create and deploy a function. See the Cloud Console quickstart for detailed instructions.

Execution environment

The execution environment includes the runtime, the operating system, and a library that invokes your function.

The Java 11 runtime uses an execution environment based on Ubuntu 18.04 with Java version 11.0.6. See Cloud Functions Execution Environment for more information.

The library that invokes your function is the Java Functions Framework.

Source code structure

In order for Cloud Functions to find your function's definition, each runtime has certain structuring requirements for your source code. See Writing Cloud Functions for more information.

Specifying dependencies

You can specify dependencies for your function using Maven or Gradle. For more information, see Specifying dependencies in Java.

What's next