自定义的异常

//自定义的异常类
public class MyException extends Throwable{
   //传递数字大于10
    private int detail;

    public MyException(int a) {
        this.detail = a;
    }
    //打印异常信息
    @Override
    public String toString() {
        final StringBuilder sb = new StringBuilder("MyException出现异常{");
        sb.append("detail=").append(detail);
        sb.append('}');
        return sb.toString();
    }
}

public class Demo {
    static void test(int a) throws MyException {
        System.out.println("传递的参数为："+a);
        if (a>10){
            throw new MyException(a);//抛出
        }
        System.out.println("没有出现异常");
    }
    public static void main(String[] args) {
        try {
            test(11);
        } catch (MyException e) {
            System.out.println("MyException=>"+e);
        }
    }
}