When working with modern Java applications, particularly those using the Jakarta EE (formerly Java EE) ecosystem, developers often encounter issues importing Jakarta packages in Eclipse. These errors, though frustrating, are usually rooted in misconfigurations or dependencies that Eclipse cannot resolve. Understanding why these issues occur and implementing effective fixes is crucial for a smooth development experience. In this article, we will explore the reasons behind these errors, walk through detailed solutions, and provide examples to clarify each step.