Because checked exceptions are part of a method's signature, you can't add one to an overriding variant any more than you can change its return type.

因为checked异常是方法签名的一部分，在覆盖方法时，不能增加checked异常，就像不能改变return类型一样。

youdao

Because checked exceptions are part of a method's signature, you can't add one to an overriding variant any more than you can change its return type.

因为checked异常是方法签名的一部分，在覆盖方法时，不能增加checked异常，就像不能改变return类型一样。

youdao