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Java Word Library overview

The Java Word Library (Essential DocIO for Java) is a feature-rich and high-performance library that allows you to add advanced Word document processing functionalities to any Java application. It allows you to create, read, and edit Word documents programmatically without Microsoft Office or interop dependencies. It allows you to create complex reports by merging data from various data sources using its powerful mail merge engine. This library also allows merging, splitting, organizing Word documents, and finding and replacing text with ease.

Overview Diagram of Java Word Library

General information

Blazing fast performance

It is optimized for a server environment where speed and low memory usage are critical, Java Word Library works much faster and consumes less memory when compared to Office automation libraries.

No server deployment fees

There are no distribution fees, per-server licensing fees, or royalties, which makes Java Word Library very cost-effective.

Powerful and comprehensive APIs

All the elements of a typical Word document like text, formatting, images, tables, sections, headers, and footers are accessible through a comprehensive set of APIs. It only takes a few lines of code to create or manipulate richly formatted Word documents.

Supported file formats

Create, read and edit popular text file formats like DOCM, DOTM, DOCX, DOTX, HTML, TXT, RTF, and XML (WordML). Convert Word document to HTML and TEXT files.

Start reports with Word and finish with Word Library

Design reports using Microsoft Word and use Word Library to dynamically populate them with data. The final report can be saved to a Word file or exported to other supported formats.

Mail merge

Simple Mail merge using Java Word library

Simple mail merge

Mail merge is a process of merging data from the data source with a Word document template to produce personalized documents. Multiple documents can also be created from a Word template.

Group Mail merge using Java Word library

Group mail merge

Perform mail merge by repeating a particular region of the document automatically for every record in the data source.

Nested Mail merge using Java Word library

Nested mail merge

Generate complex reports by repeating nested regions, if you have two or more mail merge regions where one of them is inside the other in a hierarchical form, with relational data.

Data sources for performing Mail merge

Data sources

Populate the Word document template with data from common data sources.

Format the merged data during Mail merge


Format the merged text, numeric values and date-times automatically with the help of field switches.

Merge image during Mail merge


When the prefix “image:” is added to the merge field name, it replaces it with an image in the Java Word document.

Mail merge events to customize the merged data

Mail merge events

Customize the document during mail merge by formatting and editing the merged text, numeric and image data with mail merge events and change the layout of the document by inserting breaks.

Options to customize Mail merge functionality

Mail merge options

Supports options like mapping merge fields with fields in data sources, retrieving merge field names and removing merge fields that are not merged, empty paragraphs and empty groups.

For more information, check our Mail merge features.

Document elements

Sections in Word document


Organize the document content with sections for grouping and start on a new page, odd page, even page, or continue on the same page.

Header and footer in Word document

Add information like title, author, branding and page number to repeat it at the top and bottom of every page. Supports header and footer types such as different first page, and different odd and even pages.

Text in Word document


Create or edit documents with different language texts. Supports left-to-right text and right-to-left text, also.

Image in Word document


Insert images in a document with all the common layout options like text wrapping, position, size and more. Supports image formats like PNG, BMP, JPEG, TIFF, GIF, EMF, WMF, SVG, etc.

Bookmark in Word document


Create and insert bookmarks to identify a part of the document for future reference.

Hyperlink in Word document

Create a link in a document for quick access of webpages, files, emails, bookmarks, and more.

Fields in Word document


Add dynamic information like title, time, etc., to a Word document automatically. Update IF field, date-time, document properties, and more.

Text box in Word document

Text boxes

Showcase important text or quotes in a document within a text box. Insert and edit text format, and remove an existing text box.

Shapes in Word document


Add predefined shapes in Word Open XML Format document (DOCX, DOTX, DOCM, DOTM, Word XML). Insert, edit, format and remove an existing shape.

Properties of a Word document

Document properties

Read and write document information with built-in document properties. Also, supports custom document properties and document variables.


Text formatting in Word documents

Text formatting

Customize the appearance of the text with text-level formatting options like font family, size, style, underline, strikethrough, text color, highlight, subscript, superscript, etc.

Paragraph formatting in Word documents

Paragraph formatting

Customize the appearance of a paragraph with paragraph-level formatting options like indents, alignment, spacing, tab stops, text direction and more.

Bullets and Numbering in Word documents

Bullets and numbering

Organize items or create an outline of a document with bullets and numbering ranging from a single level list to a multilevel lists.

Page settings in Word documents

Page settings

Design the structure and layout of document pages with properties like size, margins, orientation, columns, line numbers, borders, page background, watermarks, etc.

Styles in Word document


Create and apply styles to ensure consistency within a document. Supports predefined and custom character styles, paragraph styles and predefined table styles.


Create, insert and delete tables in a document. Supports nested table also.

Edit tables in Word document


Edit an existing table in a document like merging cells, adding or removing cells and rows, resizing cells, etc.

Format tables in Word document


Format a table with properties like indent, alignment, cell margins and spacing, borders, shadings, repeat header row, break row across pages, etc.

Table styles in Word document


Give a polished look to tables by applying built-in styles and conditional styling options like first row, last row, banded rows, first column, last column, and banded columns.

Edit and organize

Copy and paste contents in Word document

Copy and paste

Copy a part of a document and insert it in the same or a different document with formatting options like use destination styles, keep source formatting, etc.

Edit bookmark contents in Word document

Edit bookmark contents

Navigate to a bookmark in the document and insert, edit, retrieve, or delete its content. Also replace the bookmarked contents with text, a part of a document, or an entire document.

Merge multiple Word documents


Merge multiple documents into a single document with several formatting options like use destination styles, keeping source formatting, etc.

Split Word document into multiple small documents


Split a document into multiple small documents based on sections, placeholder text, or any document element.

Design form using content controls in Word document

Design form

Create and insert content controls like plain text, rich text, pictures, checkboxes, combo boxes, dropdown lists, and date pickers in an Open XML Format Word document (DOCX, DOTX, DOCM, DOTM, Word XML). Group parts of a document with block content controls.


Encrypt and decrypt Word documents

Encrypt and decrypt Word documents

Encrypt a Word document with a password and open an encrypted Word document with a valid password.

Protect Word documents

Protect Word documents

Restrict edit permissions for specific contents in a Word document.

Form filling

Form filling with Form fields in Word document

Form fields

Create fillable forms with legacy form fields in Word documents for users to complete or print. Fill the form fields and extract data from the form fields effortlessly.

Form filling with content controls in Word document

Content controls

Create more functional forms with content controls like plain text, rich text, pictures, checkboxes, combo boxes, dropdown lists, and date pickers in Open XML Format Word documents. Fill the forms and extract data from the content controls effortlessly.


Comments in Word document


A comment is a note or annotation that an author or reviewer can add to a document. Also, edit and remove an existing comment from a document.

Accept and reject changes in Word document

Accept and reject changes

Accept and reject changes that are tracked within a Word document.

Compare Word documents.


Compare two Word documents and highlight the changes, such as insertions, deletions, and formatting, as tracked changes.

Feature matrix

Document Content Features WORD 2007-2019 RTF
Create a Word document from scratch or edit an existing Word document Yes Yes
Open an existing Word document from file system or stream Yes Yes
Save the Word document to file system, stream, or stream it to the client browser Yes Yes
Create, access and modify paragraphs and text Yes Yes
Create, access and modify tables, rows and cells Yes Yes
Create, access and modify hyperlinks Yes Yes
Create, access and modify bookmarks Yes Yes
Access, create and modify document sections, headers and footers Yes Yes
Iterate over document content Yes Yes
Copy and move document elements between documents Yes Yes
Merge multiple Word documents Yes Yes
Create, access and modify fields Yes Yes
Update fields such as IF and other popular field types Yes No
Support for inserting watermarks Yes No
Create, access and modify comments Yes Yes
Access and modify built-in document properties Yes Yes
Access and modify custom document properties Yes Yes
Encrypt documents and open password-protected documents Yes No
Specify document protection to control the type of changes Yes No
Create, access and modify form fields Yes Yes
Create, access and modify structured document tags (content controls) Yes -
Accept or delete a particular revision or all the revisions in a document Yes No
Support for inserting HTML text Yes Yes
Mail Merge WORD 2007-2019 RTF
Create, access and modify merge fields Yes Yes
Retrieve mail merge field names Yes Yes
Insert images during mail merge Yes Yes
Event handling during mail merge process to apply formatting Yes Yes
Perform mail merge on documents that contain complex merge fields Yes Yes
Perform mail merge for a specified region Yes Yes
Perform mail merge on reports that contain relational details (parent-child data) Yes Yes
Document Formatting WORD 2007-2019 RTF
Support for character formatting including font size, font color, font name, bold, italic, underline, etc. Yes Yes
Support for paragraph formatting including line spacing, alignment, indentation, spacing before and after, keep follow, etc. Yes Yes
Support for bulleted and numbered lists formatting including numbering and levels Yes Yes
Support for table formatting including alignment, borders and shading Yes Yes
Access and modify all section properties including paper size, margins, and orientation Yes Yes
Access, create, and modify paragraph styles Yes Yes
Support for applying predefined table styles Yes No
Review WORD 2007-2019 RTF
Compare two Word documents Yes No
Bookmarks WORD 2007-2019 RTF
Create and manipulate bookmarks Yes Yes
Navigate to a specific bookmark Yes Yes
Retrieve document contents between the specified bookmarks and merge to an existing or a new document Yes Yes
Insert text or part of a document’s contents between the specified bookmarks Yes Yes
Replace a document’s contents between the specified bookmarks with text or part of another document’s contents Yes Yes
Delete document contents between the specified bookmarks Yes Yes
Conversions Read Write  
Word 2007-2016 formats (*.docx, *.dotx, *.docm, *.dotm, *.xml) Yes Yes  
Word 2003 XML Document (*.xml) Yes No  
HTML Yes Yes  
Text Yes Yes  
RTF Yes Yes  


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