子类对象实例化的全过程

//子类对象实例化的全过程
public class TestDog {
public static void main(String[] args) {
Dog d = new Dog();
d.setAge(10);
d.setName("小明");
d.setHostName("花花");

System.out.println("name:" + d.getName() + " age:" + d.getAge()
+ "hostName:" + d.getHostName());

System.out.println(d.toString());
}
}

// 生物
class Creator {
private int age;

public int getAge() {
return age;
}

public void setAge(int age) {
this.age = age;
}

public Creator() {
super();
System.out.println("this is Creator's constructor");
}

}

// 动物类
class Animal extends Creator {
private String name;

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}

public Animal() {
super();
System.out.println("this is Animal's constructor");
}

}

// 狗
class Dog extends Animal {
private String hostName;

public String getHostName() {
return hostName;
}

public void setHostName(String hostName) {
this.hostName = hostName;
}

public Dog() {
super();
System.out.println("this is Dog's constructor");
}

}