自定义异常

package com.lsx.base;

public class MyException extends Exception {
    private int detail;

    public MyException(int detail) {
        this.detail = detail;
    }

    @Override
    public String toString() {
        return "MyException{" +
                "detail=" + detail +
                '}';
    }
}

class TestDemo {
    public static void test(int a) throws MyException {
        System.out.println("传递的参数为:" + a);
        if (a > 10) {
            throw new MyException(a);
        }
        System.out.println("OK!");
    }

    public static void main(String[] args) {
        try {
            test(12);
        } catch (MyException e) {
            System.out.println("MyException==>" + e);
        }
    }
}