?????????????????
???????????? ???????[ 2013/1/18 10:42:37 ] ????????
??????????????????????????о???Head First??????????????????Щ??У???????????????????????????????μ?????????????л????????????????????????????飡
??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????棡
????“??????????????”??“?????????????????”??????????“???????????”???“????????????java?е?interface???????????????”??????“?????????”interface“??”abstract“???????????????????е?????????????????????е?????????”???“????”???“??????”???????“??????????
????”?????????“???????Polymorphism??????????????“??????”???????????????ж??????????????????????У?????????????????????????????Charlie Calverts??????????——??????????????????????ó???????????????????????????????????????????????????????????????????????????????????????????????仰???????????????????????????????????????????????????????????????????????????????????????????????????????????????”??????“?????????????????????е??????????????????????????????????
??????????????????????
????????????????????Animal????????????Dog??Cat?????Animal??
???????????????????????
class Animal {
String name;
String sex;
public void Display()
{
System.out.println("name =" + name + "sex =" + sex);
}
public void Sound()
{
System.out.println("make sound!");
}
}
class Dog extends Animal{
public void Sound()
{
System.out.println("wang...wang...wang...");
}
}
class Cat extends Animal{
public void Sound()
{
System.out.println("miao...miao...miao...");
}
}
public class AnimalTest {
public static void main(String[] args)
{
Dog dog = new Dog();
dog.Sound();
Cat cat = new Cat();
cat.Sound();
}
}
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??????????????????
2023/3/23 14:23:39???д?ò??????????
2023/3/22 16:17:39????????????????????Щ??
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2021/5/28 17:25:47??????APP??????????
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