Arcgis Runtime for andriod 100 Simple marker symbol

 GraphicsOverlay graphicsOverlay = new GraphicsOverlay();
58         mMapView.getGraphicsOverlays().add(graphicsOverlay);
59 

60         //[DocRef: Name=Point graphic with symbol, Category=Fundamentals, Topic=Symbols and Renderers]
61         //create a simple marker symbol
62         SimpleMarkerSymbol symbol = new SimpleMarkerSymbol(SimpleMarkerSymbol.Style.CIRCLE, Color.RED, 12); //size 12, style of circle
63 

64         //add a new graphic with a new point geometry
65         Point graphicPoint = new Point(-226773, 6550477, SpatialReferences.getWebMercator());
66         Graphic graphic = new Graphic(graphicPoint, symbol);
67         graphicsOverlay.getGraphics().add(graphic); 

//define a polyline for the boat trip
Polyline boatRoute = getBoatTripGeometry();
//define a line symbol
SimpleLineSymbol lineSymbol = new SimpleLineSymbol(SimpleLineSymbol.Style.DASH, Color.rgb(128, 0, 128), 4);
//create the graphic
Graphic boatTripGraphic = new Graphic(boatRoute, lineSymbol);
//add to the graphic overlay
graphicOverlay.getGraphics().add(boatTripGraphic);