Fixing unmappable character during Java compilation on Ubuntu

In the lab we have a standard header at the top of our source files, a copyright statement and licence. This header contains an ISO 8859-1 encoded copyright character (©).

Normally the header blurs into the background, the exception to this rule is the first time a do a build on a new Ubuntu system and I see the following error:

[javac] /src/com/yourcorp/HelloWorld.java:8: unmappable character for encoding ASCII
[jacac] /* ?? Copyright Yourcorp 2011

The Java compiler is expecting ASCII characters rather than ISO 8859-1. To resolve this error I do the following:

1. Edit /var/lib/locales/supported.d/local and add:
   

   en_AU ISO-8859-1
   en_US ISO-8859-1
   
   

2. Open a terminal and run:
   

   $ sudo dpkg-reconfigure locales
   
   

3. Edit /etc/environment and add:
   

   LANG="EN_US"
   
   

4. Reboot.
   

With Ubuntu being so stable these days it's a long time between re-installs so I have posted this here for next time when I forget.