Moving a rectangle with a button click

[vasiqshair]

I have been delaying asking for help for a while now but now it just seems undoable. The problem that I am stuck on is to move a rectangle graphic at the click of a button. Upon clicking the "Send" button, the ActionListener attached to the "Send" button should cause a rectangle shape to move from the top of the frame to the bottom. I would really appreciate if you guys steer me in the right direction. Thanks

[shall]

I'm been trying to do something like this just recently. I'm trying to do it by scheduling a panel.repaint(). My program sets the coordinates of the image with the mouses current position.

I haven't been able to get it to work yet.

You may want to take a look at this:
ScheduledExecutorService – Java program example « pradeepwiki

[shall]

I just read your post again. It seems I misunderstood. But you'll still want to use a timer or scheduling to move the object. At each period you will update the position of the object and then call panel.repaint (or whatever your painting to).

[mwr1976]

you need to create a swing Timer like:

Timer time =  new Timer(40, this);

Your class must implement the interface ActionListener

call your rapaint() method in your actionPerformed method.
you need a variable for your change lets say in x.

int dx = 400;

         public void actionPerformed(ActionEvent arg0)
	{
             dx += 50;
             repaint();
        }

public void paint(Graphics g)
{
    g.drawRect(dx, 100, 50, 50);
}

this scenario would redraw the rectangle 50 pixels to the right every 40 milliseconds.
hope it helps!

[mwr1976]

I miss read. To do this on button click you would do your dx += 50; in your button click event. I also forgot you need to start the timer:

time.start();

[DarrylBurke]

Your class must implement the interface ActionListener

Wrong. And a gentle nudge in the right direction would have been better than posting code, especially when the person asking the question hasn't posted his/her attempts at a solution.

db

[DarrylBurke]

To do this on button click you would do your dx += 50; in your button click event.

What's a button click event? Are you sure you're posting advice that pertains to Java?

db