自定义异常

MyException

package com.exception.demo02;
//自定义的异常类    extends Exception
public class MyException extends Exception{

    //传递数字>10;
    private int detail;
    public MyException(int a){
        this.detail = a;
    }

    //toString:异常的打印信息
    @Override
    public String toString() {
        return "MyException{" + detail + '}';
    }
}

Test

package com.exception.demo02;

public class Test {
    //可能会存在异常的方法
    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("ok");
    }

    public static void main(String[] args) {
        try {
            test(11);
        } catch (MyException e) {
            //增加一些处理异常的代码块
            System.out.println("MyException=>"+e);
        }
    }
}