generates a label for the specified item . the label is typically a formatted version of the data value , but any text can be used . concode_field_sep DateFormat dateFormatter concode_elem_sep NumberFormat numberFormatter concode_elem_sep long serialVersionUID concode_field_sep int hashCode concode_elem_sep boolean equals concode_elem_sep Object clone concode_elem_sep String generateToolTip
String function ( XYDataset arg0 , int arg1 , int arg2 ) { return null ; }