Use the built-in Archive Utility by double-clicking the file, or use The Unarchiver . 2. Set Up the FreeMarker Library

Since .7z is a compressed format, you need software to "unzip" it. Right-click the file and select Extract All .

To generate text (like HTML or emails) using FreeMarker, follow this logic in your Java code: How to open a .7z file - Microsoft Q&A

Include the .jar file in your Java project's classpath . Dependencies: Ensure you have Java 8 or higher installed. 3. Basic Usage (Java Code)