title: Need Ant condition example
body: <p>Can someone please explain me with Example of Ant condition property with "if", "and", "not" and "istrue" with the code??  </p>
  
  <p>I'm new to Ant and need help on this.  </p>
  
  <p>Basically i need to download file using FTP. I have code to download it. but there are few condition i need to check before downloading.</p>
  
  <ol>
  <li>Before downloading check the Downloadstatusvariable value (usually its true or false value")</li>
  <li>check whether file is already downloaded or available in the path </li>
  <li>if both the conditions fails then exec the FTP download code.</li>
  </ol>
  
  <p>Thanks in advance.</p>