public void loadSites() { treeTable.removeAllItems(); List<URI> listAllUpdateSites = sitesManager.listAllUpdateSites(agent); for (URI uri : listAllUpdateSites) { String string = uri.toString(); treeTable.addItem( new Object[] { sitesManager.getReposiotoryNickName(agent, uri), uri.toString(), "" + sitesManager.isRepositoryEnabled(agent, uri) }, uri); } }