Add or Modify VBA Macros in Excel Files using Java

VBA is a programming language used to automate various operations in MS Excel files. Particularly, VBA macros are user-defined codes that let you speed up the spreadsheet manipulation tasks. In this article, you will learn how to work with VBA macros in Excel files programmatically. Ultimately, you will be able to add and modify VBA macros in Excel using Java.

• Work with VBA Macros using Java API
• Add VBA Macros to an Excel Workbook
• Modify VBA Macro in an Excel Workbook

Work with Excel VBA Macros using Java API

In order to work with VBA macros in Excel files, we will use Aspose.Cells for Java. It is a powerful spreadsheet automation API that lets you create, modify and convert Excel files. Furthermore, it simplifies the manipulation of VBA macros. You can either download the API or install it using the following Maven configurations.

<repository>
    <id>AsposeJavaAPI</id>
    <name>Aspose Java API</name>
    <url>https://repository.aspose.com/repo/</url>
</repository>

<dependency>
    <groupId>com.aspose</groupId>
    <artifactId>aspose-cells</artifactId>
    <version>21.5</version>
</dependency>

Add VBA Macros to an Excel Workbook in Java

The following are the steps to add VBA macro in Excel files in Java.

• First, load an existing workbook or create a new using Workbook class.
• Fetch the worksheet into a Worksheet object using Workbook.getWorksheets().get(index) method.
• Add a new VBA module using Workbook.getVbaProject().getModules().add(Worksheet) method.
• Get the reference of the newly added module into VbaModule object.
• Set name and code of the module using VbaModule.setName() and VbaModule.setCodes() methods, respectively.
• Finally, save the workbook using Workbook.save(string, SaveFormat.XLSM) method.

The following code sample shows how to add a VBA macro in an Excel file using Java.

Modify VBA Macro in an Excel Workbook in Java

The following are the steps to modify VBA macro in Excel files using Java.

• First, load an existing workbook using the Workbook class.
• Retrieve VBA module collection in a VbaModuleCollection object using Workbook.getVbaProject().getModules() method.
• Fetch each VBA module from the collection into a VbaModule object iteratively.
• Update name and code of the desired module using VbaModule.setName() and VbaModule.setCodes() methods respectively.
• Finally, save the workbook using Workbook.save(string, SaveFormat.XLSM) method.

The following code sample shows how to modify the VBA macro in an Excel file using Java.

Get a Free License

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Conclusion

VBA macros are used to automate various types of tasks in spreadsheets. In order to work with VBA macros programmatically, this article covered how to add and modify code in VBA modules using Java. To learn more, you can explore documentation of Java spreadsheet manipulation API. Also, you can post your questions or queries on our forum.

See Also

• Create Excel Files using Java without MS Office
• Convert Excel Files to PDF using Java

Tip: You may want to try Aspose online VBA macro removal tool.