Tomcat server does not start

Trying to evaluate the opens source community platform. I am not able to start it because the tomcat server is not able to start. This is the message:
Neither the JAVA_HOME nor the JRE_HOME environment variable is defined
At least one of these environment variable is needed to run this programknow which
C:\Program Files\Camunda\server\apache-tomcat-9.0.19\bin>

Does anybody configuration file should be changed to run the server?

You need to install a java JDK on your machine to run the tomcat server.
There are lot of tutorials out there to help you solve this, i found this one.