The "PROXYADDR" address will also flow down automatically based upon which ever imaging server processed the imaging request. --> This will happen when the device is booted from PXE.
Here, PROXYADDR mentioned , when the device booted using winpe.iso and still wanted to save the image in the primary/satellite server.
Additionally, Java installation is not required as prerequisite for ZCC Helper if it installed on windows 64 bit devices. But for 32 bit windows devices it's still needed as a prerequisite.