Excel workbook protection

Workbook protection allows you to protect structure of a workbook against modifications, such as deleting or renaming of sheets.

Note that workbook protection is supported only for XLSX file format.

The following example shows how you can protect a workbook.

Excel workbook protected with GemBox.Spreadsheet for Java
Screenshot of Excel workbook protected with GemBox.Spreadsheet for Java
import com.gembox.spreadsheet.*;

class Program {

    public static void main(String[] args) throws java.io.IOException {
        // If using Professional version, put your serial key below.

        ExcelFile workbook = new ExcelFile();
        ExcelWorksheet worksheet = workbook.addWorksheet("Workbook Protection");

        // ProtectionSettings class is supported only for XLSX file format.
        WorkbookProtection protectionSettings = workbook.getProtectionSettings();

        worksheet.getCell(0, 0).setValue("Workbook password is 123 (only supported for XLSX file format).");

        workbook.save("Workbook Protection.xlsx");

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If you want to try the GemBox.Spreadsheet for Java yourself, you can download the free version. It delivers the same performance and set of features as the professional version, but with some operations limited. To remove the limitation, you need to purchase a license.