Release Notes talks about JRE 7 for OC Client in Windows:
Spectrum 9.4: Java 2 Runtime Environment (JRE) version 1.7.0_60 or later
Spectrum 9.3: Java 2 Runtime Environment (JRE) version 1.7.0_21 or later
With "later" means JRE 8 too?
OneClick ships with a specific Java JRE and JDK version. All OneClick clients require this JRE version, which is available from the OneClick home page.
Java 8 will be supported in Spectrum 10.0 (Solaris is an exception though )
JRE version 8 will indeed work with OneClick on Spectrum version 9.3 and 9.4. I've been running on JRE 8 (on Windows 7) for quite some time with no issues.
There are some things you need to do to allow it to work.
1) in the Spectrum OneClick Administration>OneClick Client Configuration page, make sure you have enabled the latest version with the "+" (to "Allow new versions*") and save.
2) If you need the JCE Unlimited Strength Files for JRE version 8, you can download them from Oracle using the following link:
Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files for JDK/JRE 8 Download
The biggest issue we have with Java 8 is other non Spectrum applications – many do not work at all with Java 8.
I have been simply copying Java8 onto laptops and launching Spectrum 10 via a script that contains:
This works but is not seamless to the user base