Thinking in Java之衍生类和基础类的初始化顺序

class Real{
    public Real(String index) {
        // TODO Auto-generated constructor stub
        System.out.println("Real()"+index);
    }
}
class Meal{
    Real r= new Real("Meal");
    Meal() {
        // TODO Auto-generated constructor stub
        System.out.println("Meal()");
    }
}
class Bread{
    Bread() {
        // TODO Auto-generated constructor stub
        System.out.println("Bread()");
    }
}
class Cheese{
    Cheese() {
        System.out.println("Cheese()");
    }
}
class Lettuce{
    Lettuce() {
        // TODO Auto-generated constructor stub
        System.err.println("Lettuce()");
    }
}
class Lunch extends Meal{
    Real r= new Real("Lunch");
    Lunch(){
        System.out.println("Lunch()");
    }
}
class PortableLunch extends Lunch{
    Real r= new Real("PortableLunch");
    PortableLunch(){
        System.out.println("PortableLunch()");
    }
}
public class Sandwich extends PortableLunch{
    Bread b= new Bread();
    Cheese c= new Cheese();
    Lettuce l= new Lettuce();
    Sandwich(){
        System.out.println("Sandwich()");
    }
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        new Sandwich();
    }

}