public class TestAnimal{
public static void main(String[] args){
Animal p = new Animal("animal name");
Cat c = new Cat("cat","blue");
Dog d = new Dog("dog","black");
Lady l = new Lady("xiaoqing",p);
p.enjoy();
c.enjoy();
d.enjoy();
System.out.println(l);
Lady mi = new Lady("yangmei",c);
Lady mm = new Lady("yangmei",d);
Lady mn = new Lady("yangmei",p);
System.out.println(mi);
System.out.println(mm);
System.out.println(mn);
}
}class Animal{
String name;
Animal(String name){
this.name = name;
}
void enjoy(){
System.out.println("叫声 ");
}
}
class Cat extends Animal{
String col;
Cat(String name,String col){
super(name);
this.col = col;
}
void enjoy(){
System.out.println("猫叫声 ");
}
}
class Dog extends Animal{
String colo;
Dog(String name,String colo){
super(name);
this.colo = colo;
}
void enjoy(){
System.out.println("狗叫声 ");
}
}
class Lady{
String ladyName;
Animal pet;
Lady(String n,Animal pet){
ladyName = n;
this.pet = pet;
}
}在结果输出的时候,后面的l, mi ,mm, mn,都是输出Lady+哈希码?这是问什么?我是想练习多态的使用方法!
public static void main(String[] args){
Animal p = new Animal("animal name");
Cat c = new Cat("cat","blue");
Dog d = new Dog("dog","black");
Lady l = new Lady("xiaoqing",p);
p.enjoy();
c.enjoy();
d.enjoy();
System.out.println(l);
Lady mi = new Lady("yangmei",c);
Lady mm = new Lady("yangmei",d);
Lady mn = new Lady("yangmei",p);
System.out.println(mi);
System.out.println(mm);
System.out.println(mn);
}
}class Animal{
String name;
Animal(String name){
this.name = name;
}
void enjoy(){
System.out.println("叫声 ");
}
}
class Cat extends Animal{
String col;
Cat(String name,String col){
super(name);
this.col = col;
}
void enjoy(){
System.out.println("猫叫声 ");
}
}
class Dog extends Animal{
String colo;
Dog(String name,String colo){
super(name);
this.colo = colo;
}
void enjoy(){
System.out.println("狗叫声 ");
}
}
class Lady{
String ladyName;
Animal pet;
Lady(String n,Animal pet){
ladyName = n;
this.pet = pet;
}
}在结果输出的时候,后面的l, mi ,mm, mn,都是输出Lady+哈希码?这是问什么?我是想练习多态的使用方法!
楼主【zyp627】截止到2008-07-24 21:20:46的历史汇总数据(不包括此帖):
发帖的总数量:58 发帖的总分数:800 每贴平均分数:13
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结贴的总数量:58 结贴的总分数:800
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无满意结贴率:1.72 % 无满意结分率:2.50 %
敬礼!