jls15_19.java

class Point { int x, y; }
class ColoredPoint extends Point { int color; }

class Test {
	static void test(ColoredPoint p, Point q) {
		System.out.println("(ColoredPoint, Point)");
	}
	static void test(Point p, ColoredPoint q) {
		System.out.println("(Point, ColoredPoint)");
	}
	public static void main(String[] args) {
		ColoredPoint cp = new ColoredPoint();
		test(cp, cp);											// compile-time error
	}
}