How to push example.war file to github using JGIT api in java


i am trying to push war file to atlassian hub push is success but war file is not reflecting in hub please help me to push.
This is my code
git.commit().setAll(true).setMessage(“Commit all changes including additions”).call();
git.commit().setAll(true).setMessage(“initial commit”).call();
git.push().setCredentialsProvider(new UsernamePasswordCredentialsProvider(userName, password)).call();"


Can you expand on what the Atlassian hub is?