import org.eclipse.swt.graphics.GC; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class DrawLine { public static void main(String[] args) { Display display = new Display(); Shell shell = new Shell(display); shell.open(); GC gc = new GC(shell); gc.drawLine(0, 0, 19, 19); gc.drawLine(19, 0, 0, 19); gc.dispose(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } }