How to use DirectoryDialog to prompt for a directory

Code:

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import org.eclipse.swt.widgets.DirectoryDialog;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class Snippet33 {

  public static void main(String[] args) {Display display = new Display();
    Shell shell = new Shell(display);
    shell.open();
    DirectoryDialog dialog = new DirectoryDialog(shell);
    dialog.setFilterPath("c:\\"); // Windows specific
    System.out.println("RESULT=" + dialog.open());
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch())
        display.sleep();
    }
    display.dispose();
  }

}

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