// add each user into the list
for (User u : alContacts) {
// add user panel to main branch
CustomContact cc = new CustomContact(u, c);
cc.addMouseListener(new SelectingUserListener(this));
getContactListHash().put(u.getUsername(), cc);
getContactList().add(cc);
// create new chatWindow
if (!contactHash.containsKey(u.getUsername())) {