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");

       }

}