The Wireless Setup Wizard shows a dialog prompting me to install the Java Runtime Environment and I cannot finish setting up my Brother machine with a network connection (OS X v.10.10.x).
This issue will be resolved if you use the latest version of Wireless Setup Wizard. Click here to download the latest version of Wireless Setup Wizard from Downloads section.
If the same message above appears when you use the latest version of Wireless Setup Wizard, click More Info… and install the Java Runtime Environment. Then, follow the on-screen instructions and finish setting up your Brother machine with the network connection.