title: How to set the value of specific cell in JTable?
body: <p>I just want to know how to <code>update specific cell in JTable</code>,</p>
  
  <p>like if I want to set the cell(1,1) to have the value of <code>Test Value</code>. </p>
  
  <p>my code goes like this but does not work for me:</p>
  
  <pre><code>String s = "Test Value";
  tableName.setValueAt((Object)s, 1, 1);
  </code></pre>