Please install a supported JRE version and try again. If you need it for a specific context (e.g., installer popup, documentation, or web app), here are a few variants:
Java Runtime Environment 1.6 or above is required on the target machine.
Java Runtime Environment 1.6 or above is required on your device to launch this application.
Java Runtime Environment 1.6 or above is required on your computer to continue the installation.
Here’s a clear, professional error message or system requirement notice based on your text: this system to run the application.
Drainage Devon