Java and Bazel
This page contains resources that help you use Bazel with Java projects. It links to a tutorial, build rules, and other information specific to building Java projects with Bazel.
- Working with Bazel
- Migrating to Bazel
- Best practices
- Java and new rules
Working with Bazel
The following resources will help you work with Bazel on Java projects:
Migrating to Bazel
If you currently build your Java projects with Maven, follow the steps in the migration guide to start building your Maven projects with Bazel:
In addition to general Bazel best practices, below are best practices specific to Java projects.
Prefer Maven’s standard directory layout (sources under
Follow these guidelines when creating your BUILD files:
Use one BUILD file per package containing Java sources.
Every BUILD file should contain one
java_libraryrule that looks like this:
java_library( name = "directory-name", srcs = glob(["*.java"]), deps = [...], )
The name of the library should be the name of the directory containing the BUILD file.
The sources should be a non-recursive
globof all Java files in the directory.
Tests should be in a matching directory under
src/testand depend on this library.
Java and new rules
Note: Creating new rules is for advanced build and test scenarios. You do not need it when getting started with Bazel.
The following modules, configuration fragments, and providers will help you extend Bazel’s capabilities when building your Java projects: