title: What do these JDatePicker Properties do?
body: <p>I recently viewed the following code in the context of implementing a JDatePicker in <a href="https://stackoverflow.com/a/26794863/4547020">this post</a>.</p>
  
  <pre><code>UtilDateModel model = new UtilDateModel();
  //model.setDate(20,04,2014);
  // Need this...
  Properties p = new Properties();
  p.put("text.today", "Today");
  p.put("text.month", "Month");
  p.put("text.year", "Year");
  JDatePanelImpl datePanel = new JDatePanelImpl(model, p);
  // Don't know about the formatter, but there it is...
  JDatePickerImpl datePicker = new JDatePickerImpl(datePanel, new DateLabelFormatter());
  </code></pre>
  
  <p>I wanted to know what the properties Keys "text.month" and "text.year" do.  I tried implementing this code and say no change when omitting them.  Furthermore, I tried searching for a list of Keys in the Properties class and found nothing helpful.  Would anyone know what these property keys do or how I could find out if omitting them is acceptable?</p>