title: Draw dot/line on the current Jframe
body: <p>I am working on drawing a line or dot on the current Jframe.</p>
  
  <p>I have already generated it and now i want to draw on it, without losing the frame data.
  I have gone through some suggestions but most of them suggests to redraw the Jframe. Some of them suggested to use Jpanel. Problem is that I am new here, and I dont think I am getting anywhere now without any help. So please can anyone help me with this..?</p>
  
  <p>Sample code is given below  </p>
  
  <pre><code>private static JFrame showImage(BufferedImage src){
      ImageIcon icon = new ImageIcon(img);
      JLabel lbl = new JLabel();
      lbl.setIcon(icon);
      JFrame frame = new JFrame("JFrame");
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      frame.getContentPane().add(lbl, BorderLayout.CENTER);
      frame.setSize(800, 600);
      frame.pack();
      frame.setLocationRelativeTo(null);
      frame.setVisible(true);
      return frame;
  }
  
  public static void main(String[] args) {
      try {
  
          //read image
          try{
              File f = new File("/home/amit/workspacenew/autocrop/screenshot_full_solid.png");
              img = ImageIO.read(f);
          }catch(IOException e){
              System.out.println(e);
          }
  
          JFrame frame = showImage(img);
          frame.addMouseListener(new MouseListener() {            
              @Override
              public void mouseClicked(MouseEvent e) {
                  int x=e.getX();
                  int y=e.getY();
  
  
                  //need suggestion here
                  drawdot(x, y);  
              }
  
          });                 
  
      } catch (Exception e) {
          e.printStackTrace();
      }
  }   
  </code></pre>