Problem C: 异常1

检测年龄，其中若为负数或大于等于200岁皆为异常，请将下列代码补充完整。

// 你的代码将被嵌入这里
class Main{
   public static void main(String[] args){
        Person p1=new Person("John",80);
        Person p2=new Person("peter",210);
        try{p1.isValid();}catch(AgeException e){System.out.println(e.getMessage());}
        try{p2.isValid();}catch(AgeException e){System.out.println(e.getMessage());}
    }
}

 

Output Description：

John's age is valid!
peter's age is invalid!

 

我的代码：

class Person{
    String name;
    int age;
    public Person(){}
    public Person(String a,int b){
        name = a;
        age = b;
    }
    String invalid()
    {
        return name+"'s age is invalid!";
    }
    String valid()
    {
        return name+"'s age is valid!";
    }
    void isValid() throws AgeException
    {
        if( age>=200 ){
            //如果年龄异常则抛出异常，并创建一个异常类，传入消息
            throw new AgeException(invalid());
        }else{
            throw new AgeException(valid());
        }
    }

}
class AgeException extends Exception{
    String message;
    public AgeException(){}
    public AgeException(  String message ){
        this.message = message;
    }
    public String getMessage()
    {
        return  message;
    }
}