public class TestTask extends Task
{
  /** loader class name. */
  private String loaderClassName;

  /** classpathref property internal field. */
  private Reference classpathref;

  /** loader instance. */
  private DatabaseModelLoader loader;

  /**
   * getter for the classpathref property.
   * @return Returns the classpathref property value.
   */
  public Reference getClasspathRef()
  {
    return classpathref;
  }

  /**
   * setter for the classpathref property.
   * @param classpathref The classpathref to set.
   */
  public void setClasspathRef(Reference classpathref)
  {
    this.classpathref = classpathref;
  }

  public void execute()
  {
    loadModules();
    try
    {
(....)
    }
    catch (Exception e)
    {
      e.printStackTrace();
      throw new BuildException(e);
    }
  }

  private void loadModules()
  {
    loader = null;
    if (loaderClassName == null)
      throw new BuildException("loader can't be null");
    try
    {
      ClassLoader classLoader = this.getClass().getClassLoader();
      Class loaderClass = classLoader.loadClass(loaderClassName);
      loader = (DatabaseModelLoader) loaderClass.newInstance();
    }
    catch (Exception e)
    {
      throw new BuildException(e);
    }
  }

  /**
   * setter for the loader class name property.
   * @param dialect The dialect to set.
   */
  public void setLoader(String loader)
  {
    this.loaderClassName = loader;
  }

}

<!-- Replace "value" with your installation's directory -->
<property name="dependencyfinder.home" value="C:/DependencyFinder"/>

<path id="dependencyfinder">
    <pathelement location="${dependencyfinder.home}/classes"/>
    <pathelement location="${dependencyfinder.home}/lib/DependencyFinder.jar"/>
    <pathelement location="${dependencyfinder.home}/lib/jakarta-oro.jar"/>
    <pathelement location="${dependencyfinder.home}/lib/log4j.jar"/>
</path>

<taskdef resource="dependencyfindertasks.properties">
    <classpath refid="dependencyfinder"/>
</taskdef>