title: Java Class Accessibility
body: <p>Slightly related to my <a href="https://stackoverflow.com/questions/267750/java-instance-variable-accessibility">other question</a>: What is the difference between the following:</p>
  
  <pre><code>private class Joe
  protected class Joe
  public class Joe
  class Joe
  </code></pre>
  
  <p>Once again, the difference between the last 2 is what I'm most interested in.</p>