Using the following line:

GitHub github = GitHub.connectAnonymously();

Generates:
Exception in thread "main" java.lang.IllegalStateException: This operation requires a credential but none is given to the GitHub constructor
at org.kohsuke.github.GitHub.requireCredential(GitHub.java:197)
at org.kohsuke.github.GitHub.getMyself(GitHub.java:228)
at org.kohsuke.github.GitHub.(GitHub.java:127)
at org.kohsuke.github.GitHub.(GitHub.java:74)
at org.kohsuke.github.GitHub.connectAnonymously(GitHub.java:192)
at com.omertron.githubtest.GitHubTest.(GitHubTest.java:16)
at com.omertron.githubtest.App.main(App.java:8)

Note: I do not have a ".github" file in my user directory (nor do I want one, I just want to be able to access github anon from my code)