title: How to fix "NoClassDefFoundError" with BCrypt (org.mindrot.BCrypt)?
body: <p>I try to create a <strong>Minecraft Plugin</strong> (it's my first one) and I can't fix this <strong>error</strong>: </p>
  
  <p>So, the plugin compiles good but when the code has to execute this code :</p>
  
  <pre class="lang-java prettyprint-override"><code>BCrypt.checkpw(mdp, result.getString("mdp"))
  </code></pre>
  
  <p>that come from the lib org.mindrot.BCrypt, I have this error : </p>
  
  <pre><code>    Caused by: java.lang.NoClassDefFoundError: org/mindrot/BCrypt
  </code></pre>
  
  <p>But, when I open my JAR with WinRAR, there is my lib bcrypt (so it's well export). And it's also in my <em>.classpath</em>. </p>
  
  <p>Can you help me ?</p>
  
  <p>Thanks.</p>