How to make L-shaped lines?

Question

Hi all,
as I'm rather new to Java I'm facing the follwing problem:
I've managed somehow to draw some lines on a JPanel. Now I'd like to click on any line and after the click a little point should appear on the chosen line. Then, dragging that point, the straight line should become an L-shaped line.
Again, as I'm new to Java I really don't know how to perform this task.
Any pieces of code, suggestions or whatever are highly appreciated.
Thanks in advance,
Hannes

Answer 1

Hi Hannes,
I am still not sure about what you want but this should help you with the techniques you might need. Please look at this applet and let me know.
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Berk Can Celebisoy
public class ForumTest extends JApplet {
  public void init() {   
    getContentPane().add(new CustomPanel());
class CustomPanel extends JPanel {
  int x1, y1, x2, y2, x3, y3;
  Graphics g_;
  public CustomPanel() {
    x1 = 10;   y1 = 10;
    x2 = 10;   y2 = 90;   
    addMouseMotionListener(new MouseMotionAdapter() {
      public void mouseDragged(MouseEvent e) {       
        x3 = e.getX();
        y3 = e.getY();                       
    addMouseListener(new MouseAdapter() {
      public void mouseReleased(MouseEvent e) {        
        g_ = getGraphics();
        //draw the conecting lines
        g_.drawLine(x1, y1, x3, y3);
        g_.drawLine(x2, y2, x3, y3);
        //draw the rectangle
        g_.drawRect(x3-2, y3-2, 4, 4);                     
      public void mousePressed(MouseEvent e) {       
        repaint();        
  public void paintComponent(Graphics g) {
    //draw the initial line.   
    g.drawLine(x1, y1, x2, y2);    
    //draw the rectangles
    g.drawRect(x1-2, y1-2, 4, 4);
    g.drawRect(x2-2, y2-2, 4, 4);
}