How to Run a JAR File on Mac

Run a JAR on macOS by double-clicking or using the terminal. Learn how to install Java, fix Gatekeeper 'cannot be opened' warnings, and handle common errors.

Step 1: Check You Have Java

Step 2: Run the JAR From the Terminal

Step 3: Run by Double-Clicking

Troubleshooting Common Errors

Inspect a JAR Before Running It

Summary