the program is throwing exceptions at me when reading from a file

Question

I have seen this be answered on others and i have tried it but i couldn't find anything that worked for me i was looking for help.

    ArrayList<Integer> integers = new ArrayList<Integer>();
    Scanner fileScanner = new Scanner(new File("workspace\Sudoku\file"));

it keeps giving me this error "Invalid escape sequence (valid ones are \b \t \n \f \r \" \' \\)", the file location is correct by the way. i think it may be because i am using a scanner although i am not 100% sure.

That's a compiler error, not an exception. It has nothing to do with using `Scanner`, it's just invalid code. — Andy Turner, Sep 12 '16 at 22:16
You need either to escape the backslash (`workspace\\Sudoku\\file`) or just use `/` - it gets translated to a backslash on Windows. — Andy Turner, Sep 12 '16 at 22:16
It's surprisingly difficult to find a canonical question/answer for this. — shmosel, Sep 12 '16 at 22:19
The program is not throwing exceptions at all, let alone at you. Compiler errors are printed. Exceptions are thrown. This is a compiler error. Don't misuse standard terminology. — user207421, Sep 12 '16 at 23:25

score 0 · Answer 1 · answered Sep 12 '16 at 22:17

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You need to escape the escape character which is "\", try this:

Scanner fileScanner = new Scanner(new File("workspace\\Sudoku\\file"));

answered Sep 12 '16 at 22:17

RAZ_Muh_Taz

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score 0 · Answer 2 · answered Sep 12 '16 at 22:17

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Your string is not escaped properly.

Use:

Scanner fileScanner = new Scanner(new File("workspace\\Sudoku\\file"));

answered Sep 12 '16 at 22:17

pr0gramist

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the program is throwing exceptions at me when reading from a file

2 Answers2