Im reading a programming book on The Scanner, and it's saying that we don't need to use try-catch block when reading data because IOException are captured, but we do need try-catch when attaching a Scanner to a file. Im reading a programming book on The Scanner, a
阅读背景：
为什么在读取数据时我们不需要使用try-catch块，但是在将Scanner附加到文件时我们确实需要try-catch？
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