In order to use Javadoc for your web development project, you must write doc comments in Java source code files, using the Javadoc conventions and guidelines. You can use an IDE, such as Eclipse or IntelliJ IDEA, to help with this process. Afterwards, you must run the Javadoc tool from the command line or a build tool like Maven or Gradle to generate your API documentation. You can customize the output directory, visibility level, stylesheet, and links to external sources. Finally, you can view your API documentation in a web browser or a documentation viewer like JavaHelp or Oracle Help. Additionally, you can distribute your documentation as a JAR file or a ZIP file.