Java多态代码“找不到构造函数”
我试图向自己解释 java 多态性，所以我简单地创建了一个项目，显示 Family 是 SuperClass 和 SubClassesBrothers Sisters`
问题是，当我编译时，我收到一条错误消息： 找不到构造函数姐妹 找不到构造函数兄弟
有人能给我解释一下吗？
谢谢你们。
class Family {
private String name,age;
public Family(String name,String age){
this.name = name;
this.age = age;
}
public String toString(){
return "name : " + name + "\tage " + age ;
}
}
class Brothers extends Family{
public Brothers(String name, String age){
super(name,age);
}
}
class Sisters extends Family{
public Sisters(String name, String age){
super(name,age);
}
}
class FamilyTest{
public static void main(String[] args){
Family[] Member= new Family[3];
Member[1] = new Sisters("LALA",22);
Member[2] = new Brothers("Mike",18);
}
}
I'm trying to explain java Polymorphism to my self so I've simply created a project showing that Family is the SuperClass and SubClasses areBrothersSisters`
The thing is when I compile I receive an error saying thatCannot find the Constructor SistersCannot find the Constructor Brothers
Could someone explain to me?
Thanks guys.
class Family {
private String name,age;
public Family(String name,String age){
this.name = name;
this.age = age;
}
public String toString(){
return "name : " + name + "\tage " + age ;
}
}
class Brothers extends Family{
public Brothers(String name, String age){
super(name,age);
}
}
class Sisters extends Family{
public Sisters(String name, String age){
super(name,age);
}
}
class FamilyTest{
public static void main(String[] args){
Family[] Member= new Family[3];
Member[1] = new Sisters("LALA",22);
Member[2] = new Brothers("Mike",18);
}
}
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评论（3）
您已将
age定义为 String，但向其传递了一个整数。应该可以，但我建议您将
age从 String 更改为 int。You have
agedefinded as String but you pass an integer to it.should work but I would advice you to change
agefrom String to int.将 main() 替换为以下代码，
错误是：
sisters和brothers的构造函数的参数是 String，但您将age传递为一个整数。建议：你可以将age的类型改为
int，这样更正确。Replace the main() with this code,
The error was : arguments for the constructors of
sistersandbrotherswere String, but you passedageas anInteger.Sugggestion : you may change the type of age to
int, which is more correct.请注意，这只是 Java 中可以使用的多态类型之一，其他类型还有泛型和函数重载
Please note that this is just one of the types of polymorphism you can use in Java, others are
GenericsandFunction overloading