Describe the bug
VisualVM doesn't start when OpenJDK 14 is used

To Reproduce
Steps to reproduce the behavior:

1. Install Open JDK 14 on macOS
2. Download VisualVM 2.0
3. Attempt to start it
4. See error

Expected behavior
VisualVM starts normaly

Screenshots

Desktop (please complete the following information):

• OS: MacOS
• JDK version: OpenJDK 14
• Versio: 2.0