Java-测试自定义异常

package com.it;

/**
 * 测试自定义异常
 */
public class Test03 {
    public static void main(String[] args) throws IllegalAgeException {
        Person p = new Person();
        p.setAge(99);
        System.out.println(p.getAge());
    }
}
/**
 * 不合法年龄异常
 */
class IllegalAgeException extends Exception{
//    默认无参构造器
    public IllegalAgeException(){};
    public IllegalAgeException(String message){
        super(message);
    }
}
class Person {
    private String name;
    private int age;
    public void setAge(int age) throws IllegalAgeException {
        if (age<0){
            throw new IllegalAgeException("人的年龄不能小于0");
        }
        this.age = age;
    }
    public int getAge(){
        return this.age;
    }
}