Convert 7ZIP Files to XLSX in Java

What is 7ZIP file format?

The 7Z file format is a highly popular and open source file format that is widely used for both archiving and data compression. Developed by Igor Pavlov, the 7Z format is utilized by the 7-Zip archiver for creating compressed archives. With its ability to compress a wide range of file types, including executable files, Office documents, and multimedia files, it has become a popular choice among users. One of the most significant advantages of the 7Z format is its high compression ratio, which results in smaller file sizes compared to other compression formats.

Due to its low file size and robust security features, the 7Z format is increasingly being used as a preferred method for transferring large files over the internet. It allows archives to be password-protected and encrypted for additional security, and archives can also be split into multiple volumes or parts for easy transmission or storage on external media.

With support available in numerous archiving programs, including 7-Zip, PeaZip, and WinRAR, the 7Z format is prevalent in the open-source community. It has emerged as a viable solution for developers to bundle multiple files into a single archive for software delivery. The 7Z format also enables the compression of files within an archive without extracting them, making it an efficient and flexible solution for both small and large file archiving and transportation. All in all, the 7Z file format provides a reliable, secure, and efficient way to package and transport files of all types and sizes.

What is XLSX file format?

The XLSX file format is a widely used file format for storing spreadsheet data. It was introduced by Microsoft as part of their Microsoft Office suite, specifically for the Excel application. XLSX stands for Excel Open XML Spreadsheet. Unlike its predecessor, the XLS format, which was based on a proprietary binary file structure, XLSX is based on the Open XML file format.

XLSX files are structured as a collection of XML files compressed into a single ZIP archive. This XML-based structure allows for more efficient storage and faster data processing. XLSX files store data in a tabular format, with rows and columns that can contain text, numbers, formulas, and other types of data. They also support formatting options such as cell styles, fonts, colors, and conditional formatting.

One of the advantages of the XLSX format is its compatibility across different platforms and software applications. Many spreadsheet programs, including Microsoft Excel, Google Sheets, and LibreOffice Calc, can open and edit XLSX files. This makes it easy to share and collaborate on spreadsheet data with others, regardless of the software they are using.

XLSX files also offer features like data validation, filtering, sorting, and the ability to create charts and graphs based on the data. Additionally, XLSX files can contain multiple sheets within a single file, allowing users to organize and manage different sets of data within a single document.