title: Java: Importing StringUtils
body: <p>I am trying to import StringUtils. My first step was downloading 'commons-lang3-3.4.jar' which I included in the same directory as my PersonTester.java file that I am working on. In my PersonTester.java in which I intend to use StringUtils, I include:</p>
  
  <pre><code>import org.apache.commons.lang3.StringUtils;
  </code></pre>
  
  <p>When I try and compile I get the following error:</p>
  
  <pre><code>PersonTester.java:6: error: package org.apache.commons.lang3 does not exist
  </code></pre>
  
  <p>import org.apache.commons.lang3.StringUtils;</p>
  
  <p>When I comment out the import statement and remove any statements that intend to utilize StringUtils, it compiles and runs just fine.</p>
  
  <p>Thank you!</p>