This tutorial demonstrates how to use WordsApi together with the CompareDocumentOnline operation to compare DOCX files via the Java REST API, offering a clear, step‑by‑step workflow for developers who need to detect changes between two Word documents. For detailed information about the DOCX format, see the DOCX file info page.

Prerequisites

• Create an account and get API credentials
• Download the Aspose.Words Cloud SDK for Java to compare two Word files
• Set up a Java project with the SDK for comparing the DOCX files

Steps Compare Two Word Docs with Java Low Code API

1. Initialize the WordsApi object by setting the client ID and secret to compare the documents
2. Read the latest Word file into a memory stream and upload it to cloud storage
3. Create the CompareData object and use the uploaded file as a reference
4. Read the original Word file into a memory stream
5. Create the CompareDocumentOnlineRequest object by providing the original file, the updated file, and the desired output file name
6. Invoke the CompareDocumentOnline method and pass the request object
7. Download the output Word file from the response and save it locally

The steps above illustrate how to compare Word docs online with Java Low Code API. Begin by uploading the latest Word file to cloud storage, then create a CompareData object that references the uploaded document. Load the original file, build a CompareDocumentOnlineRequest with both documents and the output name, and finally call CompareDocumentOnline to obtain the comparison result.

Code to Compare Word Documents Online with Java REST API

This example shows how to use the Java REST API to compare two Word documents. First, the newer file is uploaded to cloud storage as the reference document, while the previous version is read from the local file system. The CompareData object’s CompareOptions property lets you fine‑tune the comparison—enabling you to ignore case changes, comments, fields, footnotes, formatting, headers and footers, tables, and text boxes as needed.

With this guide you now have everything you need to compare two Word documents using the .NET REST API. If you also want to remove comments from a Word file, see our detailed walkthrough: Delete Comments in Word DOC with Java REST API.

Key takeaways: compare Word files with the Java Low Code API; compare Word documents with the .NET REST API; compare Word documents online using the .NET REST API; and compare differences between two Word documents with the Java REST API.