Valhalla has arrived in mainline Java (build 28-ea+10-569): https://jdk.java.net/28/ $ cat Points.java value record Point(double x, double y) { public Point moveBy(double dx, double dy) { return new Point(x + dx, y + dy); } } void main() { var p = new Point(0, 0); for (int i = 0; i < 100_000_000; i++) { p = p.moveBy(Math.random() - 0.5, Math.random() - 0.5); } IO.println(p); } $ java --enable-preview Points.java