Java SE Development Kit OpenJDK (JDK15.0.2)
https://jdk.java.net/15/
WAS (Apache Tomcat9 apache-tomcat-9.0.43.exe)
https://tomcat.apache.org/download-90.cgi
IDE (Eclipse IDE Jee 2020-12 (eclipse-inst-win64.exe))
https://www.eclipse.org/downloads/