Java可变阴影
例子
变量被隐藏，方法被覆盖。将使用哪个变量取决于声明该变量的类。使用哪种方法取决于变量引用的对象的实际类。
class Car {
public int gearRatio = 8;
public String accelerate() {
return "Accelerate : Car";
}
}
class SportsCar extends Car {
public int gearRatio = 9;
public String accelerate() {
return "Accelerate : SportsCar";
}
public void test() {
}
public static void main(String[] args) {
Car car = new SportsCar();
System.out.println(car.gearRatio + " " + car.accelerate());
//将打印出8Accelerate:SportsCar
}
}