Updating a progress bar from the UI thread

[Java Tip]

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.ProgressBar;
import org.eclipse.swt.widgets.Shell;

public class Snippet57 {

public static void main (String [] args) {
  Display display = new Display ();
  Shell shell = new Shell (display);
  ProgressBar bar = new ProgressBar (shell, SWT.SMOOTH);
  bar.setBounds (10, 10, 200, 32);
  shell.open ();
  for (int i=0; i<=bar.getMaximum (); i++) {
    try {Thread.sleep (100);} catch (Throwable th) {}
    bar.setSelection (i);
  }
  while (!shell.isDisposed ()) {
    if (!display.readAndDispatch ()) display.sleep ();
  }
  display.dispose ();
}
}