client only have JDK1.6 now, can client have a try , or there is no way to use JDK1.6. Client aware the potential risk taken by using JDK1.6.
No, you can't. If you try to run the RFA Java 8.0 library with JDK/JRE 1.6, you'll encounter java.lang.UnsupportedClassVersionError: <an application class name> : Unsupported major.minor version 51.0.
Note: major.minor version 51.0 means that the library was compiled with Java 7.
Actually, RFA Java requires JDK/JRE 7 (or higher) since version 7.4.
Hope this helps.