Mark circle = sb.createMark(StyleBuilder.MARK_CIRCLE, Color.RED);
Graphic graph2 = sb.createGraphic(null, circle, null, 1, 4, 0);
PointSymbolizer pointSymbolizer = sb.createPointSymbolizer(graph2);
// creation of the style
Style style = sb.createStyle();
FeatureTypeStyle featureTypeStyle = sb.createFeatureTypeStyle("labelPoint", new Symbolizer[] {
textSymbolizer, pointSymbolizer });
style.featureTypeStyles().add(featureTypeStyle);
// creation of the style