public class Ch70 {
public static void main(String[] args) {
Dog d1=new Dog("憨憨",2,1.28,"棕色");
Dog d2=new Dog("球球",1,1.35,"白色");
Cat c1=new Cat("咪咪",3,0.95);
d1.showProfile();
d1.makeSound(2);
d2.showProfile();
d2.makeSound(3);
c1.showProfile();
c1.makeSound(5);
}
}
class Animal
{
String name;
int age;
double weight;
Animal(String n,int a,double w)
{
name=n;
age=a;
weight=w;
}
void showProfile()
{
System.out.println(name+"今年"+age+"歲,體重"+weight+"公斤.");
}
}
class Dog extends Animal
{
String color; //新增屬性
Dog(String n,int a,double w,String c)//定義Dog子類別的建構子
{
super(n,a,w); //調用父類別的建構子
color=c; //增加建構子的參數
}
void makeSound(int x)
{
for(int i=1; i<=x; i++)
System.out.print("汪~");
System.out.println();
}
void showProfile()
{
System.out.println(name+"今年"+age+"歲,體重"+weight+"公斤,毛色為"+color+".");
}
}
class Cat extends Animal
{
Cat(String n,int a,double w)
{
super(n,a,w);
}
void makeSound(int x)
{
for(int i=1; i<=x; i++)
System.out.print("喵~");
System.out.println();
}
} |