title: JTable cell text color changing
body: <p>I´m rather new to Java and programming itself, so excuse me for the question. What I´m trying to do is the following:</p>
  
  <p>I´m making a bookkeeping program. On the column where the income/outcome is displayed, I want it so when the user enters a <strong>negative</strong> number (eg. -1.150€),
  the number turns red( or any color really, but red is what most bookkeeping programs use). only that specific cell on that column only. I have not started with a code yet so I cannot input one here. I also do not need it to be right-aligned since I have already done that.</p>
  
  <p>PS. Sorry if this post/question already exists, I searched but I found nothing that could help me much.</p>