When I ran the pacman -Syu the process exited with the following failure:

:: Proceed with installation? [Y/n]
(25/25) checking keys in keyring [########################################] 100%
(25/25) checking package integrity [########################################] 100%
(25/25) loading package files [########################################] 100%
(25/25) checking for file conflicts [########################################] 100%
error: failed to commit transaction (conflicting files)
java-runtime-common: /usr/bin/java exists in filesystem
java-runtime-common: /usr/bin/keytool exists in filesystem
java-runtime-common: /usr/bin/orbd exists in filesystem
java-runtime-common: /usr/bin/pack200 exists in filesystem
java-runtime-common: /usr/bin/policytool exists in filesystem
java-runtime-common: /usr/bin/rmid exists in filesystem
java-runtime-common: /usr/bin/rmiregistry exists in filesystem
java-runtime-common: /usr/bin/servertool exists in filesystem
java-runtime-common: /usr/bin/tnameserv exists in filesystem
java-runtime-common: /usr/bin/unpack200 exists in filesystem
java-runtime-common: /usr/lib/jvm/default exists in filesystem
java-runtime-common: /usr/lib/jvm/default-runtime exists in filesystem
Errors occurred, no packages were upgraded.

The solution as can be found here:

$ sudo archlinux-java unset
$ sudo pacman -Sydd --asdeps java-runtime-common
:: java-runtime-common and java-common are in conflict. Remove java-common? [y/N] y
$ sudo archlinux-java fix