title: Issue with org.junit.*; in Netbeans "package org.junit does not exist"
body: <p>I am attempting to make a to do list and need to import org.junit. However, NetBeans will not acknowledge that this package exists. I get the error:"package org.junit does not exist". I tested importing org.xml.sax.Attributes, which worked. 
  I'm using NetBeans 8.2 on windows 10 Version 10.0.15063 Build 15063</p>
  
  <p>What I have attempted:</p>
  
  <ul>
  <li>adding JUnit through "Add Library" </li>
  <li>clearing the cache  </li>
  <li>restarting NetBeans</li>
  <li>restarting my PC</li>
  </ul>
  
  <p>What else can I do in order to get Junit to work</p>