title: Creating a JComboBox in a JTable with the dropdown always visible
body: <p>In Swing is possible to create a JComboBox in a JTable, as seen by <a href="http://docs.oracle.com/javase/tutorial/uiswing/components/table.html#combobox" rel="noreferrer">this guide</a> from Oracle. They have a lovely picture that shows this in action:</p>
  
  <p><img src="https://i.stack.imgur.com/36kpx.png" alt="enter image description here"></p>
  
  <p>However, what the fail to show is that if you haven't clicked on the cell, the dropdown arrows are not visible and it just looks like a normal text label, as seen below:</p>
  
  <p><img src="https://i.stack.imgur.com/Zo8vV.png" alt="enter image description here"></p>
  
  <p>You can see that knitting has dropdown arrows because I just clicked on it, but the other ones don't. This is sadly less than ideal because there are no visual cues that the cell can be clicked on to show a list of options. In other words, the "Sport" column looks identical to the "Last Name" column. One of them is a dropdown, the other is not, but they visually look the same unless you happen to click on one of them.</p>
  
  <p>Is there any way that this can be done in Swing?</p>
  
  <p>EDIT: To clarify, what I want is for ALL the cells in the "Sport" column to have arrows indicating a dropdown menu, even if they were not the least one clicked. Basically, I want it to look like a combo box whether I've clicked on it or not.</p>