title: Failed to parse int 3 in base 3
body: <p>Strangest thing. I have this line</p>
  
  <pre><code>int i = Integer.parseInt("3",3);
  </code></pre>
  
  <p>But everytime i run it, i get a NumberFormatException.forInputString. Why? this is a simple base conversion. What is so special about the int 3 that breaks the conversion?</p>