tij一个关于继承的问题

[asiaec]

//: c06:PlaceSetting.java
// Combining composition & inheritance.

class Plate {
Plate(int i) {
System.out.println("Plate constructor");
}
}

class DinnerPlate extends Plate {
DinnerPlate(int i) {
super(i);
System.out.println(
"DinnerPlate constructor");
}
}

class Utensil {
Utensil(int i) {
System.out.println("Utensil constructor");
}
}

class Spoon extends Utensil {
Spoon(int i) {
super(i);
System.out.println("Spoon constructor");
}
}

class Fork extends Utensil {
Fork(int i) {
super(i);
System.out.println("Fork constructor");
}
}

class Knife extends Utensil {
Knife(int i) {
super(i);
System.out.println("Knife constructor");
}
}

// A cultural way of doing something:
class Custom {
Custom(int i) {
System.out.println("Custom constructor");
}
}

public class PlaceSetting extends Custom {
Spoon sp;
Fork frk;
Knife kn;
DinnerPlate pl;
PlaceSetting(int i) {
super(i + 1);
sp = new Spoon(i + 2);
frk = new Fork(i + 3);
kn = new Knife(i + 4);
pl = new DinnerPlate(i + 5);
System.out.println(
"PlaceSetting constructor");
}
public static void main(String[] args) {
PlaceSetting x = new PlaceSetting(9);
}
} ///:~

为什么运行了之后首先显示的不是第一个类的构造函数呢

[asiaec]

为什么没有人里我 是觉得太简单了吗

[asiaec]

。。。。