Automation with Selenium Java involves using Selenium, a powerful open-source automation tool, alongside Java to automate web application testing. It allows developers and testers to write test scripts that simulate user interactions such as clicking buttons, filling out forms, navigating between pages, and verifying content across different browsers. Java’s robust features, combined with Selenium WebDriver, offer strong integration capabilities, making it easier to handle dynamic web elements, manage test data, and create reusable test cases. This approach enhances testing efficiency, reduces manual effort, and ensures the reliability and performance of web applications across diverse environments.