title: GET JournalArticle with Id and its Title
body: <p>I'm developing a select that shows a title of a JA and has its ID as a value.</p>
  
  <pre><code>&lt;aui:select label="&lt;%= segment %&gt;" name="&lt;%= segment %&gt;" multiple="true"&gt;
          &lt;%
          for (int j = 0; j &lt; articles.size(); j++) {
              String title = articles.get(j).getTitle();
              String idTitle = articles.get(j).getArticleId();
              System.out.println("id : " + idTitle);
          %&gt;
              &lt;aui:option value="&lt;%= idTitle %&gt;"&gt;
                  &lt;liferay-ui:message key="&lt;%= title %&gt;" /&gt;
              &lt;/aui:option&gt;
          &lt;%
          }
          %&gt; 
  &lt;/aui:select&gt;
  </code></pre>
  
  <p>The fact is that I save the selected JA Id's on portlet preferences (when I process the action) and now I want to get the title of that JA with the help of that Id from <code>init.jsp</code> to show the selected JA:</p>
  
  <pre><code>long groupId = themeDisplay.getScopeGroupId();
  String jaId = contents[j];
              JournalArticle art = JournalArticleLocalServiceUtil.getArticle(groupId, jaId);
  
              System.out.println("JA : " + art);
              rule += " idContent : " + contents[j] + " with title : " + art.getTitle();
  </code></pre>
  
  <p>The variable content is a collection of the JA id's collected:</p>
  
  <pre><code>&lt;%
          for (int j = 0; j &lt; articles.size(); j++) {
              String title = articles.get(j).getTitle();
              String idTitle = articles.get(j).getArticleId();
  </code></pre>
  
  <p>It's a <code>String[]</code> of <code>idTitle</code>s.</p>
  
  <p>The problem here is that <code>art.getTitle</code> returns null. How is that possible?</p>