Java tutorial
import java.awt.BasicStroke; import java.awt.Graphics; import java.awt.Graphics2D; import javax.swing.JFrame; import javax.swing.JPanel; public class LinesDashes1 extends JPanel { public void paintComponent(Graphics g) { super.paintComponent(g); Graphics2D g2d = (Graphics2D) g; float[] dash1 = { 2f, 0f, 2f }; g2d.drawLine(20, 40, 250, 40); BasicStroke bs1 = new BasicStroke(1, BasicStroke.CAP_BUTT, BasicStroke.JOIN_ROUND, 1.0f, dash1, 2f); g2d.setStroke(bs1); g2d.drawLine(20, 80, 250, 80); } public static void main(String[] args) { LinesDashes1 lines = new LinesDashes1(); JFrame frame = new JFrame("Lines"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.add(lines); frame.setSize(280, 270); frame.setLocationRelativeTo(null); frame.setVisible(true); } }