title: How to add a JAR in NetBeans
body: <p>Let's say you create a new project, and want it to make use of some 3rd party library, say, <code>widget.jar</code>. Where do you add this JAR:</p>
  
  <ol>
  <li>File >> Project Properties >> Libraries >> <strong>Compile-Time Libraries</strong>; or</li>
  <li>File >> Project Properties >> Libraries >> <strong>Run-Time Libraries</strong>; or</li>
  <li>Tools >> Libraries (Library Manager) >> Library Classpath; or</li>
  <li>Tools >> Java Platforms (Java Platform Manager)</li>
  </ol>
  
  <p>All of these dialogs seem to do the same thing but I'm sure they all have their proper usages. Can't find a good "best practices" article online and the NetBeans Help Contents dialog isn't helping with this either.</p>