var polygon = OpenLayers.Geometry.Polygon.createRegularPolygon(new OpenLayers.Geometry.Point(6, 49), 2, 18, 0); var feature = new OpenLayers.Feature.Vector(polygon); var wkt_c = new OpenLayers.Format.WKT(); var wktString = wkt_c.write(feature); var p…
1. 一个简单的swing public class Test(){ public static void main(String[] args){ JFrame frame = new JFrame(); JPanel panel = new JPanel(); JTextArea textArea = new JTextArea(); panel.setLayout(new GridLayout()); textArea.setText("test"); //当TextArea里的…