import org.eclipse.swt.*;
import org.eclipse.swt.graphics.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;

public class AutohidingScrollbar {

	public static void main(String[] args) {
		final Display display = new Display();

		final Shell shell = new Shell(display);
		shell.setLayout(new FillLayout());

		final Composite composite = new Composite(shell, SWT.V_SCROLL);
		composite.getVerticalBar().setValues(0, 0, 1000, 10, 1, 10);
		composite.addListener(SWT.Paint, event -> {
			final Rectangle area = composite.getClientArea();
			final String string = "hello world";
			final int stringWidth = event.gc.stringExtent(string).x;
			event.gc.drawString(string, area.x + area.width - stringWidth, area.y);
		});

		shell.setSize(400, 300);
		shell.open();

		while (!shell.isDisposed()) {
			if (!display.readAndDispatch()) {
				display.sleep();
			}
		}

		display.dispose();
	}
}