Java tutorial
import java.awt.BasicStroke; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class LinesDashes4 extends JPanel { public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; float[] dash4 = { 4f, 4f, 1f }; BasicStroke bs4 = new BasicStroke(1, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 1.0f, dash4, 2f); g2d.setStroke(bs4); g2d.drawLine(20, 20, 250, 20); } public static void main(String[] args) { LinesDashes4 lines = new LinesDashes4(); JFrame frame = new JFrame("Lines"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(lines); frame.setSize(280, 270); frame.setLocationRelativeTo(null); frame.setVisible(true); } }