Java version for SoapUI 4.5.1 on RedHat

Hi

What is the official release of JDK that can be used on RedHat 5.8 for SoapUI 4.5.1.

We currently have java version "1.7.0_17" installed. The reason that version was installed is that it matches the java version bundled with SoapUI 4.5.1 on Windows.

dave