java4android (抽象类和抽象函数)

abstract class Person{
    String name;
    int age;
    
    Person(){
        System.out.print("Person的构造函数");
    }
    
    void introduce(){
        System.out.print(name+"  "+age);
    }
    
    abstract void eat();
} 

class Chinese extends Person{
    
    Chinese(){//生成子类时一定要先调用父类的构造函数 super();
        System.out.print("Chinese的构造函数");
    }
    
    //复写Person抽象类中的抽象函数
    void eat(){
        System.out.print("用筷子吃饭");
    }
}

class Test{
    public static void main(String args[]){
        Person p = new Chinese();
        p.eat();
    }
}