How to read a text file directly from Internet using Java

Question

I am trying to read some words from an online text file   I tried doing something like this  File file   new File  http   www puzzlers org pub wordlists pocket txt    Scanner scan   new Scanner file     but it didn t work  I am getting   http   www puzzlers org pub wordlists pocket txt    as the output and I just want to get all the words   I know they taught me this back in the day but I don t remember exactly how to do it now  any help is greatly appreciated

User · Answer

try something like this    URL u   new URL  http   www puzzlers org pub wordlists pocket txt     InputStream in   u openStream      Then use it as any plain old input stream

User · Answer

Use an URL instead of File for any access that is not on your local computer   URL url   new URL  http   www puzzlers org pub wordlists pocket txt    Scanner s   new Scanner url openStream       Actually  URL is even more generally useful  also for local access  use a file  URL   jar files  and about everything that one can retrieve somehow   The way above interprets the file in your platforms default encoding  If you want to use the encoding indicated by the server instead  you have to use a URLConnection and parse it s content type  like indicated in the answers to this question     About your Error  make sure your file compiles without any errors - you need to handle the exceptions  Click the red messages given by your IDE  it should show you a recommendation how to fix it  Do not start a program which does not compile  even if the IDE allows this    Here with some sample exception-handling   try      URL url   new URL  http   www puzzlers org pub wordlists pocket txt       Scanner s   new Scanner url openStream           read from your scanner   catch IOException ex          there was some connection problem  or the file did not exist on the server        or your URL was not in the right format        think about what to do now  and put it here     ex printStackTrace       for now  simply output it

User · Answer

Using Apache Commons IO   import org apache commons io IOUtils   import java io IOException  import java io InputStream  import java net URL  import java nio charset StandardCharsets   public static String readURLToString String url  throws IOException       try  InputStream inputStream   new URL url  openStream                  return IOUtils toString inputStream  StandardCharsets UTF 8

User · Answer

I did that in the following way for an image  you should be able to do it for text using similar steps      folder  amp  name of image on PC           File fileObj   new File  C   Displayable  imgcopy jpg      Boolean testB   fileObj createNewFile     System out println  Test this file eeeeeeeeeeeeeeeeeeee   testB       image on server URL url   new URL  http   localhost 8181 POPTEST2 imgone jpg     InputStream webIS   url openStream     FileOutputStream fo   new FileOutputStream fileObj   int c   0  do       c   webIS read        System out println                 gt      c       if  c   -1            fo write  byte  c           while c    -1    webIS close    fo close

User · Answer

Use this code to read an Internet resource into a String   public static String readToString String targetURL  throws IOException       URL url   new URL targetURL       BufferedReader bufferedReader   new BufferedReader              new InputStreamReader url openStream           StringBuilder stringBuilder   new StringBuilder         String inputLine      while   inputLine   bufferedReader readLine       null                stringBuilder append inputLine           stringBuilder append System lineSeparator                bufferedReader close        return stringBuilder toString   trim        This is based on here

User · Answer

What really worked to me     source  oracle documentation  reading url     import java net     import java io      public class UrlTextfile   public static void main String   args  throws Exception        URL oracle   new URL  http   yoursite com yourfile txt        BufferedReader in   new BufferedReader      new InputStreamReader oracle openStream           String inputLine      while   inputLine   in readLine       null          System out println inputLine       in close

User · Answer

Alternatively  you can use Guava s Resources object   URL url   new URL  http   www puzzlers org pub wordlists pocket txt    List lt String gt  lines   Resources readLines url  Charsets UTF 8   lines forEach System out  println

User · Answer

For an old school input stream  use this code     InputStream in   new URL  http   google com    openConnection   getInputStream

[java] How to read a text file directly from Internet using Java?

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