title: What does throws statement mean in java?
body: <p>Also, what does <code>throws NumberFormatException, IOException</code> mean? I keep trying to use <code>BufferedReader</code> by saying </p>
  
  <pre><code>BufferedReader nerd = new BufferedReader(new InputStreamReader(System.in));
  </code></pre>
  
  <p>but <code>BufferedReader</code> won't work unless <code>throws NumberFormatException, IOException</code> is put in.</p>