//The following two lines are needed to open and close an SWT window.
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class HelloWorldSWT {
	public static void main(String[] args) {

		//The following two lines are needed to open an SWT window.
		Display display = new Display();
		Shell shell = new Shell(display);

		shell.setText("Hello world!");	//title bar
		shell.open();	//Open the window (i.e., make it visible).

		//The following six lines are needed to close the SWT window.
		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}
		display.dispose();
	}
}