代码练习020
2023-04-09 本文已影响0人
哈迪斯Java
class Toilet<T> {
public void enter(T t) {
}
}
class Male {
}
class Female {
}
public class Demo {
public static void main(String[] args) {
Toilet<Male> mansroom = new Toilet();
Toilet<Female> womansroom = new Toilet();
}
}
class Entrance<T> {
public void enter(T t) {
if(t instanceof Customer) {
System.out.println("顾客您好，小心地滑");
}
}
}
class Customer {
}
class Staff {
}
public class Demo {
public static void main(String[] args) {
Staff tom=new Staff();
Customer mali=new Customer();
Entrance<Staff> staffEntrance = new Entrance();
staffEntrance.enter(tom);
Entrance publicEntrance = new Entrance();
publicEntrance.enter(tom);
publicEntrance.enter(mali);
}
}
