question: return the number of selected objects . concode_field_sep int _mode concode_elem_sep EventListenerList _listeners concode_elem_sep SelectionEvent _selEvent concode_elem_sep ArrayList _selection concode_field_sep void removeSelectionListener concode_elem_sep void renderSelected concode_elem_sep void addSelectionListener concode_elem_sep Object getLastSelection concode_elem_sep void renderDeselected concode_elem_sep int getSelectionMode concode_elem_sep void setSelectionMode concode_elem_sep void addSelection concode_elem_sep boolean containsSelection concode_elem_sep void addSelections concode_elem_sep Object getFirstSelection concode_elem_sep void dispatchSelectionEvent concode_elem_sep Iterator getSelection concode_elem_sep void clearSelection concode_elem_sep void removeSelection concode_elem_sep Object[] getSelectionAsArray
target: int function ( ) { return _selection . size ( ) ; }