Can't create Area from Rectangle2D (SSCCE included)

Question

Hi guys,
I'm trying to create an Area from a Rectangle2D as a workaround for being unable to create an Area from a Line2D.
It doesn't seem to work though; any idea why?
Here's a little SSCCE so you can see what I mean.
The area without any transformation applied displays fine (green). The 'line' produced from my Rectangle2D with the transformation also appears as desired (black). However, the Area produced from the transformation has no pixels in it (blue).
Help would be much appreciated x:o)
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.Rectangle2D;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Test implements ActionListener {
     private static Shape shape;
     private static Area area;
     private static JPanel component;
     public Test() {
          JFrame frame = new JFrame();
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          JPanel contentPane = new JPanel();
          component = new JPanel();
          component.setBackground(Color.WHITE);
          component.setOpaque(true);
          JButton button = new JButton("Draw");
          button.addActionListener(this);
          button.setActionCommand("draw");
          button.setPreferredSize(new Dimension(100, 20));
          component.setPreferredSize(new Dimension(400, 200));
          frame.setPreferredSize(new Dimension(400, 300));
          contentPane.add(component);
          contentPane.add(button);
          frame.setContentPane(contentPane);
          frame.pack();
          frame.setVisible(true);
     public static void main(String[] args) {
          new Test();
     public void actionPerformed(ActionEvent event) {
          if (event.getActionCommand().equals("draw")) {
               // Create graphics context
               Graphics2D g2d = (Graphics2D) component.getGraphics();
               // Create arbitrary endpoints for 'line'
               double x1 = 20;
               double x2 = 60;
               double y1 = 5;
               double y2 = 70;
               double deltaX = x1 - x2;
               double deltaY = y1 - y2;
               // Instantiate rectangle and derived area
               Rectangle2D.Double rectangle = new Rectangle2D.Double(x1, y1, Math.abs(deltaX), 10);
               area = new Area(rectangle);
               // Display area without transformation
               g2d.setColor(Color.GREEN);
               g2d.draw(area);
               // Construct matrix transformation for y = mx + c
               double m = deltaY / deltaX;
               double c = y1 / (m * x1);
               AffineTransform matrix = new AffineTransform(1, m, 0, 0, 0, c);
               // Transform Shape and Area by constructed matrix
               shape = matrix.createTransformedShape(rectangle);
               area = area.createTransformedArea(matrix);
               // Display the transformed Shape (black)
               g2d.setColor(Color.BLACK);
               g2d.draw(shape);
               // Shift 5 pixels right
               g2d.translate(5, 0);
               // Display the transformed Area (blue)
               g2d.setColor(Color.BLUE);
               g2d.draw(area);
               // Display transformed Area bounds as String
               g2d.drawString(area.getBounds().toString(), 80, 100);
}

Answer 1

I just came back to this, and realised that Area probably doesn't like there being no fillable area, lol slaps forehead
So this altered version works perfectly for a line of thickness 1:
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.AffineTransform;
import java.awt.geom.Area;
import java.awt.geom.Rectangle2D;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class Test implements ActionListener {
     private static Shape shape;
     private static Area area;
     private static JPanel component;
     public Test() {
          JFrame frame = new JFrame();
          frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          JPanel contentPane = new JPanel();
          component = new JPanel();
          component.setBackground(Color.WHITE);
          component.setOpaque(true);
          JButton button = new JButton("Draw");
          button.addActionListener(this);
          button.setActionCommand("draw");
          button.setPreferredSize(new Dimension(100, 20));
          component.setPreferredSize(new Dimension(400, 200));
          frame.setPreferredSize(new Dimension(400, 300));
          contentPane.add(component);
          contentPane.add(button);
          frame.setContentPane(contentPane);
          frame.pack();
          frame.setVisible(true);
     public static void main(String[] args) {
          new Test();
     public void actionPerformed(ActionEvent event) {
          if (event.getActionCommand().equals("draw")) {
               // Create graphics context
               Graphics2D g2d = (Graphics2D) component.getGraphics();
               // Create arbitrary endpoints for 'line'
               double x1 = 20;
               double x2 = 60;
               double y1 = 5;
               double y2 = 70;
               double deltaX = x1 - x2;
               double deltaY = y1 - y2;
               // Instantiate rectangle and derived area
               Rectangle2D.Double rectangle = new Rectangle2D.Double(x1, y1, Math.abs(deltaX), 1); // Here's what's changed
               area = new Area(rectangle);
               // Display area without transformation
               g2d.setColor(Color.GREEN);
               g2d.draw(area);
               // Construct matrix transformation for y = mx + c
               double m = deltaY / deltaX;
               double c = y1 - (m * x1); // ** Sidenote: typo in the above version, d'oh!
               AffineTransform matrix = new AffineTransform(1, m, 0, 1, 0, c); // Here's what's changed
               // Transform Shape and Area by constructed matrix
               shape = matrix.createTransformedShape(rectangle);
               area = area.createTransformedArea(matrix);
               // Display the transformed Shape (black)
               g2d.setColor(Color.BLACK);
               g2d.draw(shape);
               // Shift 5 pixels right
               g2d.translate(5, 0);
               // Display the transformed Area (blue)
               g2d.setColor(Color.BLUE);
               g2d.draw(area);
               // Display transformed Area bounds as String
               g2d.drawString(area.getBounds().toString(), 80, 100);
}