title: Java CSV file Manipulation
body: <p>I have following sample CSV file</p>
  
  <pre><code>rc,u,s,ui,gh
  m,1,8,0,12
  n,3,0,0,7
  d,1,1,8,0
  </code></pre>
  
  <p>I want to read this CSV file and get column by its name (e.g., s). subtract fetched column by some values and update that column in the CSV file.</p>
  
  <p>Is there an easy way to do it in Java?</p>