Java by API/java.awt.geom/RoundRectangle2D

new RoundRectangle2D.Double.Double(double x, double y, double w, double h, double arcw, double arch)

   <source lang="java">

import java.awt.Graphics; import java.awt.Graphics2D; import java.awt.geom.RoundRectangle2D; import javax.swing.JFrame; import javax.swing.JPanel; public class MainClass extends JPanel {

 public void paint(Graphics g) {
   Graphics2D g2 = (Graphics2D) g;
   RoundRectangle2D r = new RoundRectangle2D.Double (10.0, 10.0,
                                                     50.0, 50.0,
                                                     5.0, 5.0);
   g2.draw (r);
 }
 public static void main(String[] args) {
   JFrame frame = new JFrame();
   frame.getContentPane().add(new MainClass());
   frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
   frame.setSize(200, 200);
   frame.setVisible(true);
 }

}

      </source>