This article guides Java developers on permanently deleting rows in Excel based on specific criteria like 'Not Valid' or 'Not Applicable'.Steps include setting up Apache POI dependencies in the project and using Java code to identify and remove unwanted rows.Key points in the code involve looping backwards, checking cell values, and using sheet.removeRow(row) for permanent deletion.Developers are advised to keep backups before batch deletions, as deleted rows cannot be undone once the workbook is saved.