Question

Suppose we want to read in a file called "input.txt". We can do the following. File...

Suppose we want to read in a file called "input.txt". We can do the following. File f = new File(input.txt); Scanner s = new Scanner (f); ...

We know that Scanner constructor will throw a FileNotFoundException when the file does not exist. Since we already created a file object "f",

the file does exist. So why do we need to either throw the exception or do try/catch block to in order to have the program continue?

Thanks.

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Answer #1

PLEASE GIVE IT A THUMBS UP

The only exception in Scanner which is checked which has to be handled compulsory is when we open file using Scanner constructor since it is Checked exception, that's why it has to be handled..., as it is checked in compile time, so compiler has a doubt that this might occur an error, that;s why it needs to be handled.

As you can see, that we need to handle the exception, when working with Scanner file

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