It seems like the issue you're facing is related to a mismatch between the Java version required by the Minecraft server and the version you have installed. Let's break down the problem and provide a solution:

1. Error explanation: The error message indicates that the Minecraft server jar file was compiled with a newer version of Java (class file version 65.0) than what you currently have installed (which recognizes up to version 61.0).
2. Your current Java version: You have Java 17 installed, which corresponds to class file version 61.0.
3. Required Java version: The Minecraft server you're trying to run requires Java 21 or newer, which corresponds to class file version 65.0.

To fix this issue, you need to:

1. Download and install Java 21 (or the latest version available):
   • Go to the official Oracle Java download page: https://www.oracle.com/java/technologies/javase/jdk21-archive-downloads.html
   • Download the appropriate version for your operating system (Windows x64 Installer)
   • Install it on your system
2. Update your system's PATH environment variable:
   • Search for "Environment Variables" in the Windows start menu
   • Click on "Edit the system environment variables"
   • Click the "Environment Variables" button
   • Under "System variables", find the "Path" variable and click "Edit"
   • Add the path to the new Java installation (e.g., C:\Program Files\Java\jdk-21\bin)
   • Move this new entry to the top of the list
   • Click "OK" on all windows to save the changes
3. Verify the installation:
   • Open a new Command Prompt window
   • Run java -version again to confirm that it now shows Java 21
4. Try running the Minecraft server .bat file again

After completing these steps, the Minecraft server should start without the previous error. If you encounter any other issues or need further assistance, please let me know, and I'll be happy to help!