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为啥自定义异常不能加public呢？

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不正经的二愣子

#1 Created at ... [Delete] [Delete and Lock User]

练习题里面class UserNotFoundException 加了public就会报错，写的是the public type UserNotFoundException must be defined in its own file，可是老师的讲解里面用了public class哎

叁号游神

#2 Created at ... [Delete] [Delete and Lock User]

一个.java文件只能有一个公开的类啊、

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