Following structures exist after JRE 1.5.0_16/17/18/19 uninstall on Windows Vista/2008:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{8AD9C840-044E-11D1-B3E9-00805F499D93}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CAFEEFAC-0015-0000-0018-ABCDEFFEDCBA}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CAFEEFAC-0015-0000-0018-ABCDEFFEDCBB}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{CAFEEFAC-0015-0000-0018-ABCDEFFEDCBC}
Not reproducible on Windows XP.
Steps to reproduce:
1. Install JRE 1.5.0_16/17/18/19 on a clean machine
2. Uninstall JRE
3. Check registry