Docx4j
Docx4j is an open-source Java library for creating, reading, and manipulating Microsoft Word documents in the DOCX format (Office Open XML). It provides a high-level API to work with Word documents programmatically, enabling tasks like generating reports, merging documents, and extracting content without requiring Microsoft Office. The library is widely used in enterprise applications for document automation and processing.
Developers should learn Docx4j when building Java applications that need to generate or modify Word documents dynamically, such as for report generation, contract automation, or document assembly systems. It is particularly useful in business environments where DOCX is the standard format, offering more control and flexibility than simple templating solutions. Use cases include creating invoices, merging multiple documents, or programmatically updating document content based on data inputs.