title: What is the width of a "column" for a JTextField?
body: <p>Per the <code>JTextField</code> doc, you can set the width of the field delineated in “columns”, but cannot find a definition for “columns”.</p>
  
  <p>Moreover, doing something like this:</p>
  
  <pre><code>new JTextField("abc", 3);
  </code></pre>
  
  <p>Results in a text field of width populated with the string <code>abc</code> and then extra whitespace afterwards.</p>
  
  <p>Can someone clarify the the definition of columns as used in the <code>JTextField</code> constructor?</p>