Lucid Builder v4

How to check if you have Java installed

A Java Runtime Environment (JRE) must be installed for the Lucid Builder to install and run successfully. To check if you have Java installed on your system type the following command into a Command Prompt (Windows) or a Terminal console (OSX, Linux):

java -version

For example:

Example Java version check
Example Java version check.

If you receive an “Unknown Command” error message then you most likely do not have a JRE installed. Please download and install one of the following JRE’s:

Lucid Builder v4

Java – What does it mean?

Lucid Builder has been developed using the Java platform. This allows the Builder to run under any operating system that supports the Java Runtime Environment (JRE) including Microsoft Windows, Mac OSX, Unix, Linux and Sun Solaris. See System Requirements for more information.

For Lucid to install and run on your computer you need to ensure you have the a Java Runtime Environment (JRE) installed. The minimum and recommended version is Java SE 11 (LTS).  You should check your have the latest version available, depending on which JRE you have installed you can check at:

If you are unsure if you have a JRE installed or which version you have see the ‘How to check if you have Java installed‘ help topic.