What does the Validate Maven phase do?

• A. It runs unit tests.
• B. The first phase, it validates the project is correct and all necessary information is available.
• C. It packages the artifact.
• D. It compiles the source code.

Answer: (B)

The Validate phase is the first step in Maven's default lifecycle, and its job is to check that the project is properly defined and that all necessary information is available before any actual building starts. It reads the POM (and related parent POMs), verifies essential metadata like coordinates (groupId, artifactId, version), packaging type, and required properties or profiles, and ensures the project structure is sensible. If something is missing or inconsistent, it fails early with a clear message so you can fix configuration before proceeding. This phase does not compile, test, or package; those happen in later phases, while validation acts as a guard to confirm the project is ready for the rest of the build.