I just downloaded Eclipse as archive, and installed newest 64 bit Java and 64 bit Java Development Kit 15. And i get this error. Installed JDK 11 after, the same error.
I downloaded JDK from https://www.oracle.com/java/technologies/javase-jdk15-downloads.html and put the unpacked contents to jre subdirectory of Eclipse's installation path - there is a path eclipse/jre/bin/javaw.exe. Eclipse picks it up automatically over any other installation.