for (int i= 0; i < fExistingFolders.length; i++) { if (folder.equals(fExistingFolders[i])) { return true; } } return false;
return fExistingFolders.contains(folder);
	private boolean isExisting(IContainer folder) {		for (int i= 0; i < fExistingFolders.length; i++) {			if (folder.equals(fExistingFolders[i])) {				return true;			}		}		return false;	}