/**
     * * 榨汁機(Juicer)榨汁的案例
     * 分別有水果(Fruit)蘋果(Apple)香蕉(Banana)桔子(Orange)榨汁(squeeze)
     * @throws IOException 
     */
    public static void main(String[] args) throws Exception {
        Juicer j = new Juicer();                                    //創建榨汁機
        //j.run(new Apple());
        //j.run(new Orange());
        BufferedReader br = new BufferedReader(new FileReader("config.properties"));
        Class clazz = Class.forName(br.readLine());                 //獲取該類的字節碼文件
        Fruit f = (Fruit) clazz.newInstance();                      //創建實例對象
        j.run(f);

    }
}
interface Fruit {
    public void squeeze();
}
class Apple implements Fruit {
    public void squeeze() {
        System.out.println("榨出一杯蘋果汁兒");
    }
}

class Orange implements Fruit {
    public void squeeze() {
        System.out.println("榨出一杯橘子汁兒");
    }
}

class Juicer {
    /*public void run(Apple a) {
        a.squeeze();
    }

    public void run(Orange o) {
        o.squeeze();
    }*/

    public void run(Fruit f) {
        f.squeeze();
    }
 

java反射學習一