# 异常

分为Error 和 Exception

其中Exception中 又分为两类，如图中所示

<img src="https://gitee.com/icecat2233/picture/raw/master/20250414182933522.png" alt="image-20250414182932233" style="zoom: 33%;" />

其中两种错误的表现形式有下列



![image-20250414183003770](imgh/image-20250414183003770.png)

<img src="https://gitee.com/icecat2233/picture/raw/master/20250414182755030.png" alt="image-20250414182746446" style="zoom: 67%;" />

# 异常的两种处理方式

1. **try...catch...捕获异常**

   <img src="https://gitee.com/icecat2233/picture/raw/master/20250416155305609.png" alt="image-20250416155256665" style="zoom: 50%;" />

2. **throws抛出异常**

   <img src="https://gitee.com/icecat2233/picture/raw/master/20250416155817373.png" alt="image-20250416155816351" style="zoom:50%;" />

## 两种方式怎么选择：

思路：这个问题是否需要暴漏出来？
需要暴漏，用throws

不需要暴漏，用try catch

## throws和throw的区别

<img src="https://gitee.com/icecat2233/picture/raw/master/20250416155752416.png" alt="image-20250416155750720" style="zoom:50%;" />

# 自定义异常

<img src="https://gitee.com/icecat2233/picture/raw/master/20250416163826822.png" alt="image-20250416163824387" style="zoom:50%;" />

# 异常中的细节

<img src="https://gitee.com/icecat2233/picture/raw/master/20250416164540545.png" alt="image-20250416164538085" style="zoom:50%;" />