java自定义异常

package mistake;

class NomoneyException extends Exception{
    public NomoneyException(String message){
        super(message);//调用Exception的一个参数构造函数
    }
}
public class selfmistake {

    public static void main(String[] args) {
        int money=9;
        try {
            chifan(money);
        } catch (NomoneyException e) {
            e.printStackTrace();
            System.out.println("快回去带钱！！");
        }
    }        
    public static void chifan(int money) throws NomoneyException{
        if(money<10){
            throw new NomoneyException("没钱别吃饭");
        }else{
            System.out.println("吃地沟油木桶饭！！");
        }
    }
}