Java Find txt files in specified folder

Question

Is there a built in Java code that will parse a given folder and search it for  txt files

User · Answer

import java io IOException  import java nio file FileSystems  import java nio file FileVisitResult  import java nio file Path  import java nio file PathMatcher  import java nio file SimpleFileVisitor  import java nio file attribute BasicFileAttributes  import java util ArrayList   public class FileFinder extends SimpleFileVisitor lt Path gt        private PathMatcher matcher      public ArrayList lt Path gt  foundPaths   new ArrayList lt  gt          public FileFinder String pattern            matcher   FileSystems getDefault   getPathMatcher  glob     pattern               Override     public FileVisitResult visitFile Path file  BasicFileAttributes attrs  throws IOException           Path name   file getFileName             if  matcher matches name                 foundPaths add file                      return FileVisitResult CONTINUE           import java io IOException  import java nio file Files  import java nio file LinkOption  import java nio file Path  import java nio file Paths  import java util ArrayList   public class Main       public static void main String   args  throws IOException           Path fileDir   Paths get  files            FileFinder finder   new FileFinder    txt            Files walkFileTree fileDir  finder            ArrayList lt Path gt  foundFiles   finder foundPaths           if  foundFiles size    gt  0                for  Path path   foundFiles                    System out println path toRealPath LinkOption NOFOLLOW LINKS                            else               System out println  No files were founds

User · Answer

It s really useful  I used it with a slight change   filename directory list new FilenameFilter          public boolean accept File dir  String filename             return filename startsWith ipro

User · Answer

import org apache commons io filefilter WildcardFileFilter                        File dir   new File fileDir   FileFilter fileFilter   new WildcardFileFilter    txt    File   files   dir listFiles fileFilter     The code above works great for me

User · Answer

import org apache commons io FileUtils      List lt File gt  htmFileList   new ArrayList lt File gt      for  File file    List lt File gt   FileUtils listFiles new File srcDir   new String    quot txt quot    quot TXT quot    true         htmFileList add file      This is my latest code to add all text files from a directory

User · Answer

You can use the listFiles   method provided by the java io File class   import java io File  import java io FilenameFilter   public class Filter        public File   finder  String dirName           File dir   new File dirName            return dir listFiles new FilenameFilter                       public boolean accept File dir  String filename                          return filename endsWith   txt

User · Answer

I made my solution based on the posts I found here with Google  And I thought there is no harm to post mine as well even if it is an old thread   The only plus this code gives is that it can iterate through sub-directories as well   import java io File  import java io FileFilter  import java util ArrayList  import java util Arrays  import java util List  import org apache commons io filefilter DirectoryFileFilter  import org apache commons io filefilter WildcardFileFilter    Method is as follows   List  lt File gt  exploreThis String dirPath        File topDir   new File dirPath        List lt File gt  directories   new ArrayList lt  gt         directories add topDir        List lt File gt  textFiles   new ArrayList lt  gt          List lt String gt  filterWildcards   new ArrayList lt  gt         filterWildcards add    txt        filterWildcards add    doc         FileFilter typeFilter   new WildcardFileFilter filterWildcards        while  directories isEmpty      false                List lt File gt  subDirectories   new ArrayList             for File f   directories                        subDirectories addAll Arrays asList f listFiles  FileFilter DirectoryFileFilter INSTANCE                 textFiles addAll Arrays asList f listFiles typeFilter                        directories clear            directories addAll subDirectories              return textFiles

User · Answer

Here is my platform specific code unix   public static List lt File gt  findFiles String dir  String    names                LinkedList lt String gt  command   new LinkedList lt String gt             command add   usr bin find            command add dir           List lt File gt  result   new LinkedList lt File gt             if  names length  gt  1                                List lt String gt  newNames   new LinkedList lt String gt  Arrays asList names                    String first   newNames remove 0                   command add  -name                    command add first                   for  String newName   newNames                                                command add  -or                            command add  -name                            command add newName                                               else if  names length  gt  0                                command add  -name                    command add names 0                          try                               ProcessBuilder pb   new ProcessBuilder command                   Process p   pb start                    p waitFor                    InputStream is   p getInputStream                    InputStreamReader isr   new InputStreamReader is                   BufferedReader br   new BufferedReader isr                   String line                  while   line   br readLine       null                                                   System err println line                           result add new File line                                          p destroy                          catch  Exception e                                e printStackTrace                          return result

User · Answer

Try   List lt String gt  textFiles String directory      List lt String gt  textFiles   new ArrayList lt String gt       File dir   new File directory     for  File file   dir listFiles          if  file getName   endsWith    txt             textFiles add file getName                 return textFiles      You want to do a case insensitive search in which case       if  file getName   toLowerCase   endsWith    txt         If you want to recursively search for through a directory tree for text files  you should be able to adapt the above as either a recursive function or an iterative function using a stack

[java] Java: Find .txt files in specified folder

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