Java——子类对象实例化的全过程

2.4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");

}

}