Convert TAR Files to XLSM in Java

What is TAR file format?

A TAR (tape archive) file serves as a versatile archive format, primarily utilized on Unix and Linux systems, housing multiple files alongside their associated metadata. This metadata comprises essential information like filenames, permissions, ownership details, file sizes, and other file system requirements. TAR files have gained widespread adoption as a means of storing and transferring files, particularly over the internet.

Creating a TAR file involves amalgamating multiple files into a single archive and subsequently compressing it using compression programs like gzip or bzip2. This compression process significantly reduces the file size, facilitating easier storage and transfer. Extracting files from a TAR archive is accomplished using the TAR program, enabling the recreation of the original files.

TAR files have become a fundamental part of the Linux and Unix ecosystem and are also supported by other operating systems that recognize the TAR format. Their usage extends beyond file management, as software developers frequently employ TAR files to package and distribute their software applications. By bundling all the necessary files and metadata, TAR files streamline the distribution process, ensuring that all components are packaged together for easy installation.

Moreover, TAR files find their place in the realm of data backup. Backup software often employs TAR files to store system backups, capturing all relevant files and metadata required to restore a system to a previous state. The TAR format provides a reliable and efficient method for creating comprehensive backups, safeguarding critical data against loss or corruption.

What is XLSM file format?

The XLSM file format is an extension of the XLSX file format used for Microsoft Excel workbooks. Similar to XLSX, it is based on the Open XML file format and is associated with the Excel application. The “M” in XLSM stands for “macro-enabled”, indicating that it supports the inclusion of macros.

XLSM files store spreadsheet data, including worksheets, formulas, charts, and other elements commonly found in Excel workbooks. Additionally, XLSM files allow the embedding of VBA (Visual Basic for Applications) macros within the workbook. Macros are scripts written in VBA that automate tasks, perform calculations, and interact with the spreadsheet data.

By including macros in XLSM files, users can create customized functions, automate repetitive tasks, and enhance the functionality of their Excel workbooks. Macros can be written to manipulate data, generate reports, perform complex calculations, or interact with other applications.

When opening an XLSM file, Excel prompts the user to enable or disable macros due to security concerns. Enabling macros allows the embedded VBA code to execute, while disabling macros prevents potential security risks associated with malicious code.

XLSM files provide advanced features and customization options for Excel users who require automation beyond the capabilities of the standard XLSX format. They are commonly used in business environments, financial modeling, data analysis, and other scenarios where complex calculations and automation are necessary.