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Merge Cells in Excel using Java REST API

This step‑by‑step guide shows you how to merge cells in Excel using a Java REST API. By leveraging the Java Low‑Code API and the Aspose.Cells Cloud SDK, you’ll learn to combine rows or columns in an XLSX workbook precisely according to your needs.

Prerequisite

Steps to Merge Cells using Java RESTful Service

  1. Define the clientID, clientSecret, and apiBaseUrl required to authenticate and connect to Aspose Cloud
  2. Using the credentials and base URL, initialize the CellsApi object for making API calls
  3. Define source Excel file name and remote file names under which the file will be saved in the cloud
  4. Upload the file to Cloud storage using the cellsApi.UploadFile() method
  5. Create a PostWorksheetMergeRequest object, set the start/end cells and merge area size
  6. Execute the request using the PostWorksheetMerge() method
  7. Download the updated Excel file from the Cloud using the DownloadFileRequest

These steps describe how to combine rows in Excel using Java-based API or columns of your choice. The process authenticates with Aspose.Cells Cloud, using provided credentials, uploads a local Excel file to Cloud storage and merges a 4x4 range of cells starting at cell B2 on Sheet1. It then downloads the modified file and saves it local disk.

Code to Merge Cells in Spreadsheet using Java REST Interface

The example above illustrates how to merge cells using the Java REST Interface. By looping through ranges you can merge multiple areas in a single pass, and you can also merge cells dynamically—based on their content or formatting—by first retrieving those values. To merge cells within a single column (for instance, column B), just set the start column to 1, the total columns to 1, and specify the number of rows you want to combine.

In this guide we’ve walked through how to merge cells, rows, or columns using the Java REST API. When you’re ready to add an auto‑filter to your Excel workbook, be sure to explore the article on Apply filter in Excel using Java REST API.

 

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