在下面的例子中，x=1; y=1; 會(huì)先被調(diào)用，然后才是int color = 0xFF00FF被調(diào)用。

class Point {
    int x, y;
    Point() { x = 1; y = 1; }
}
class ColoredPoint extends Point {
    int color = 0xFF00FF;
}
class Test {
    public static void main(String[] args) {
        ColoredPoint cp = new ColoredPoint();
        System.out.println(cp.color);
    }
}

https://docs.oracle.com/javase/specs/jls/se8/html/jls-12.html#jls-12.5