title: how to add multible bytes together?
body: <p>I'm trying to write a ROM file patcher and I came to this in the documentation:</p>
  
  <pre><code>The next three bytes are the place in the destination file
  (the file to be patched) where a change is to be made.
  
  The two bytes following that are the length of the amount
  of data to be changed.
  </code></pre>
  
  <p>How would I turn those three and two bytes into a single number in java properly?</p>