title: Comparing strings in a Textbox
body: <p>I would like to compare the string in a textbox if it contains "per/kg" and use that to disable a button. I have tried several methods but it did not work please kindly help out.</p>
  
  <pre><code>if (productDescTextBox.getText().equals("per/kg"))
      {
          buttonDot.setEnabled(true);
      }
      else buttonDot.setEnabled(false);
  </code></pre>
  
  <p>and this </p>
  
  <pre><code>if ("per/kg".equals(productDescTextBox.getText().toString()))
      {
          buttonDot.setEnabled(true);
      }
      else buttonDot.setEnabled(false);
  </code></pre>