How to read in words from file into a string

Question

for a lab i am working on, we are supposed to read in words from a file and get the length of each, and then store it in an array. Would reading in each word into a string and then storing the length in the array be the best way of going about this? And if so, could someone give me a pointer on how to do this? I am a bit lost..

Thanks!

start by writing some code – Scary Wombat Feb 10 '16 at 02:06 — Scary Wombat, Feb 10 '16 at 02:06
https://docs.oracle.com/javase/tutorial/essential/io/ – peter Feb 10 '16 at 02:06 — peter, Feb 10 '16 at 02:06
Ok thanks! appreciate the pointers – Adam7397 Feb 10 '16 at 02:09 — Adam7397, Feb 10 '16 at 02:09

Peter Lawrey · Answer 1 · 2016-02-10T02:11:49.183

1

For simple data processing I suggest you use the Streams API

int[] wordLengths = 
   // get all the lines of the file as a stream.
   Files.lines(Paths.get("filename"))
        // split the lines into a stream of words
        .flatMap(s -> Stream.of(s.trim().split(" +")))
        // get the length of each word
        .mapToInt(String::length)
        // turn them into an array.
        .toArray();

edited Feb 10 '16 at 02:11

answered Feb 10 '16 at 02:09

Peter Lawrey

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Im not sure if I have learned how to use that API yet. I am only in CS2. – Adam7397 Feb 10 '16 at 02:11
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@Adam7397 I don't know what CS2 is but if your are expected to use what you have been taught, only you know what that is. – Peter Lawrey Feb 10 '16 at 02:12
ok thanks! I appreciate your input. – Adam7397 Feb 10 '16 at 02:12
@Adam7397 in short, I would use an array of `int` – Peter Lawrey Feb 10 '16 at 02:28
Beautiful solution. A good demonstration of the Streams API. – hagello Feb 10 '16 at 04:38

How to read in words from file into a string

1 Answers1