import javax.swing.*;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.*;
import java.awt.BasicStroke;

public class StrokeTest5 extends JPanel{

  public static void main(String[] args){
    JFrame frame = new JFrame();

    StrokeTest5 app = new StrokeTest5();
    frame.getContentPane().add(app);

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setBounds(10, 10, 300, 200);
    frame.setTitle("ƒ^ƒCƒgƒ‹");
    frame.setVisible(true);
  }

  public void paintComponent(Graphics g){
    Graphics2D g2 = (Graphics2D)g;

    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, 
                        RenderingHints.VALUE_ANTIALIAS_ON);

    float dash1[] = {10.0f, 3.0f};
    BasicStroke dsahStroke1 = new BasicStroke(2.0f, 
                                              BasicStroke.CAP_BUTT, 
                                              BasicStroke.JOIN_MITER, 
                                              3.0f,
                                              dash1,
                                              0.0f);
    g2.setStroke(dsahStroke1);

    g2.draw(new Line2D.Double(50, 30, 230, 30));

    BasicStroke dsahStroke2 = new BasicStroke(2.0f, 
                                              BasicStroke.CAP_BUTT, 
                                              BasicStroke.JOIN_MITER, 
                                              3.0f,
                                              dash1,
                                              3.0f);
    g2.setStroke(dsahStroke2);

    g2.draw(new Line2D.Double(50, 80, 230, 80));

    float dash2[] = {10.0f, 3.0f, 3.0f, 3.0f, 3.0f, 3.0f};
    BasicStroke dsahStroke3 = new BasicStroke(2.0f, 
                                              BasicStroke.CAP_BUTT, 
                                              BasicStroke.JOIN_MITER, 
                                              3.0f,
                                              dash2,
                                              0.0f);
    g2.setStroke(dsahStroke3);

    g2.draw(new Line2D.Double(50, 130, 230, 130));
  }
}