exception in thread main java.util.nosuchelementexception with new Scanner(file)

Question

I have a problem with my code,I get this error all the time:

Exception in thread "main" java.util.NoSuchElementException
    at java.util.Scanner.throwFor(Scanner.java:907)
    at java.util.Scanner.next(Scanner.java:1416)
    at audio.AudioSecrets.main(AudioSecrets.java:32)
Java Result: 1

my problem is this ligne:

contents = new Scanner(file).useDelimiter("\\Z").next().toCharArray(); //

The \\Z delimiter in combination with .next() will read input until there isn't any left.

how can I input the file to my program,thanks for help

It looks like you're trying to put the whole file into a String. This is dealt with at [What is simplest way to read a file into String?](http://stackoverflow.com/questions/3402735/what-is-simplest-way-to-read-a-file-into-string) which is why I voted to close as a duplicate of that one. It's not that this is a bad question - it's a good one. It's just that this has been done before. — Dawood ibn Kareem, Mar 28 '14 at 05:05

score 5 · Accepted Answer · answered Mar 28 '14 at 05:03

5

You should check hasNext() before calling next(). Probably there are no elements matching your criteria.

Scanner s = new Scanner(file);
s.useDelimiter("\\Z");
if(s.hasNext()) {
   contents = s.next().toCharArray();
}

answered Mar 28 '14 at 05:03

sanbhat

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exception in thread main java.util.nosuchelementexception with new Scanner(file)

1 Answers1