你学会了吗
2023-06-05 本文已影响0人
哈迪斯Java
class Color {
}
class Red extends Color {
}
class Yellow extends Color {
}
class Blue extends Color {
}
public class ColorDemo {
public static void main(String[] args) {
Color color[] = { new Red(), new Yellow(), new Blue() };
for (int i = 0; i < 3; i++) {
int index = (int) (Math.random() * 3);
judge(color[index]);
}
}
public static void judge(Color color) {
if (color instanceof Red)
System.out.print("红");
if (color instanceof Yellow)
System.out.print("黄");
if (color instanceof Blue)
System.out.print("蓝");
}
}
