void function ( int arg0 ) { }
undo the action done after the given step . for example , when the given step is 0 , nothing was done , so nothing can be undone ; and when the given step is 1 , undo the first action . undo allows users to work part way through fixing a problem , see the partial result , and explore a different alternative . concode_field_sep int step concode_elem_sep List<JPanel> panels concode_elem_sep boolean started concode_elem_sep boolean finished concode_elem_sep WizardItem item concode_field_sep void next concode_elem_sep void removePanel concode_elem_sep JPanel getCurrentPanel concode_elem_sep boolean canGoBack concode_elem_sep boolean canFinish concode_elem_sep int getStep concode_elem_sep JPanel makePanel concode_elem_sep void back concode_elem_sep int getNumSteps concode_elem_sep boolean isStarted concode_elem_sep void setToDoItem concode_elem_sep boolean isFinished concode_elem_sep int getProgress concode_elem_sep WizardItem getToDoItem concode_elem_sep boolean canGoNext concode_elem_sep void finish concode_elem_sep JPanel getPanel concode_elem_sep void doAction concode_elem_sep void doAction