A DESCRIPTION OF THE PROBLEM :
The "Oracle JDK 9 and JRE 9 Certified System Configurations" does not indicate any 32-bit certifications to support 32-bit Windows 7 or 10. But yet, the Installation documentation specifically includes instructions for 32-bit Windows:

https://docs.oracle.com/javase/9/install/installation-jdk-and-jre-microsoft-windows-platforms.htm#JSJIG-GUID-F4A125E0-5A87-40F8-8704-12954EA3A890

Also, all EA releases, including the final release candidate, EA 181, included 32-bit Windows support. The Java 9 release downloads, which is the same as EA 181, does not include 32-bit Windows:

http://www.oracle.com/technetwork/java/javase/downloads/jre9-downloads-3848532.html

Why was there no final build? And where is the 32-bit Windows JRE?

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
32-bit Windows certified with Java 9
ACTUAL -
Only 64-bit Windows certified with Java 9

URL OF FAULTY DOCUMENTATION :
http://www.oracle.com/technetwork/java/javase/jdk9certconfig-3761018.html