public boolean hasGroup(String groupName) {
        boolean result = false;
        for (Group item : getGroupsList()) {
            if (item.getName().equals(groupName)) {
                result = true;
            }
        }
        return result;
    }
public boolean hasGroup ( String groupName ) { boolean result = false ; for ( Group item : getGroupsList ( ) ) { if ( item . getName ( ) . equals ( groupName ) ) { result = true ; } } return result ; }
Check if a group with the given groupName exists in the
list or not.
The check will be done case-sensitive.
@param groupName The name we are searching for.
@return true if the group has been found false otherwise.