title: How to draw semi circle
body: <p>I am developing a small application in Java. I am using Java2D Library for drawing some graphical objects. Now i want to draw some semi-circle like shape or in simple words i need to draw this <code>(</code> shape and this <code>)</code> shape. I didn't find any function for drawing semi-circle, but i guess that <code>Arc2D.Double(. . .);</code>
  will work for me, so i tried it but i didn't understand what params i need to pass to its constructor. So i end up with the strange kind of shape :(</p>
  
  <p>Could some one explains these params in detail or refer to some good link.</p>