org.eclipse.swt.widgets.Button click from code

I am trying to click Button from code. I am tying to do the following:

class MyMouseAdapter extends MouseAdapter
{
    public void mouseDown(MouseEvent evt) 
    {
       System.out.println("Working!!!!");
    }
}
Button button = new Button();
button.addMouseListener(new MyMouseAdapter());

now I want to run the mouseDown method from code could you tell me how to do it?

Thank you.