Go to Windows Settings⇒Apps, find Java 8 and click on "Uninstall.".IF YOU HAVE JAVA 8 CURRENTLY INSTALLED, MAKE SURE TO UNINSTALL IT FIRST. Java 11 (see suggestions by clicking here). If you want to run a more current version of JMRI, consider installing Use the tables above to make sure the version of Java you are running is compatible with the version Open a "command" windowīy typing "Command prompt" into the search bar next to the Windows Start icon. It is recommended that you use java 11, and if you have no applications requiring Java 1.8 then remove it.Ĭheck to see what release of Java is currently installed on your computer. first valid version 11 or higher found in the registry keys.the jre directory within the JMRI install directory,.When running JMRI the search order for java (specifically bin/javaw.exe) is: To an absolute version as described in Using a specific java version section below. If java 11 or greater is not found it will ask you whether you wish to continue the installation.Ĭontinuing permits you to resolve this issue later by either installing a valid version or linking JMRI During the installation your machine will be checked for java 11 or greater.įirst it will check the default version, then if that fails search the registry entries (javasoft keys). There may be other combinations that are also possible, but they have not been reported by the user community. The table below shows configurations that have been reported working. Using JMRI requires a combination of hardware (in this case running Windows), Java software and a JMRIĭownload for a specific version. Installing Java 8 on older versions of Windows.This Install Guide is for JMRI versions 3 and later.įor earlier versions (2012 and before), refer to the old Windows Install Guide. Debugging an installation Supported Hardware Devices, command stations, networks, and protocols:.Download and install JMRI® JMRI Setup and Installation JMRI environments.
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