question: @ Override public boolean equals ( Object obj ) { if ( obj == this ) { return true ; } if ( ! ( obj instanceof XYDifferenceRenderer ) ) { return false ; } if ( ! super . equals ( obj ) ) { return false ; } XYDifferenceRenderer that = ( XYDifferenceRenderer ) obj ; if ( ! PaintUtilities . equal ( this . positivePaint , that . positivePaint ) ) { return false ; } if ( ! PaintUtilities . equal ( this . negativePaint , that . negativePaint ) ) { return false ; } if ( this . shapesVisible != that . shapesVisible ) { return false ; } if ( ! ShapeUtilities . equal ( this . legendLine , that . legendLine ) ) { return false ; } if ( this . roundXCoordinates != that . roundXCoordinates ) { return false ; } return true ; }
target:  Tests this renderer for equality with an arbitrary object.