void function ( ) { outputConsole . clear ( ) ; }
clears the output display area concode_field_sep TextArea outputConsole concode_elem_sep Logic logic concode_elem_sep TextField commandInput concode_elem_sep Stoppable mainApp concode_field_sep void setMainApp concode_elem_sep void displayResult concode_elem_sep void clearCommandInput concode_elem_sep void onCommand concode_elem_sep boolean isExitCommand concode_elem_sep void display concode_elem_sep void display concode_elem_sep void exitApp concode_elem_sep void displayWelcomeMessage concode_elem_sep void setLogic