title: StringBuilder and Builder Pattern
body: <p>I'm new in Design Patterns so I have one question about the Builder Pattern.
  Today I heard that Builder Pattern is different from the class <code>StringBuilder</code> in Java, C#. I know that main goal of the Builder Pattern is to create complex objects in few steps...I think that this is making <code>StringBuilder</code> with it's method <code>Append</code>...So it's hardly for me to find the difference...</p>
  
  <p>Could you tell me is there really any difference and if it is...what's it :)?</p>