Answer: Different Lifecycle Phases in Maven and How They Work

The Maven build lifecycle consists of three main phases that are crucial for managing the build process of a project. These phases are: clean, default, and site.

1. Clean Phase

The clean phase is one of the initial phases in the Maven lifecycle. It is used to clean up any artifacts created by previous builds. This phase is executed by running the command mvn clean and it removes the target directory that contains all the compiled classes and resources.

2. Default Phase

The default phase is the most important phase in the Maven lifecycle. It is responsible for compiling the source code, running tests, packaging the application, and deploying it as necessary. This phase is triggered by running the command mvn install and ensures that the project is built and packaged correctly.

3. Site Phase

The site phase is used to generate project documentation and reports. It creates a set of HTML documents that provide details about the project's build process, test results, code coverage, and more. This phase is executed by running the command mvn site and generates the project site in the target/site directory for easy access.

Understanding and correctly utilizing these lifecycle phases is essential for effectively managing and controlling the build process of a project in Maven.