How to check if a folder exists

Question

I am playing a bit with the new Java 7 IO features  actually I trying to receive all the xml files of a folder  But this throws an exception when the folder does not exist  how can I check if the folder exists with the new IO    public UpdateHandler String release        log info  searching for configuration files in folder     release       Path releaseFolder   Paths get release       try DirectoryStream lt Path gt  stream   Files newDirectoryStream releaseFolder     xml              for  Path entry  stream               log info  working on file     entry getFileName                         catch  IOException e           log error  error while retrieving update configuration files     e getMessage

User · Answer

We can check files and thire Folders   import java io    public class fileCheck       public static void main String arg                  File f   new File  C  AMD            if  f exists    amp  amp  f isDirectory              System out println  Exists              if the file is present then it will show the msg                     else          System out println  NOT Exists              if the file is Not present then it will show the msg

User · Answer

File sourceLoc new File   a b c folderName    boolean isFolderExisted false  sourceLoc exists    true sourceLoc isDirectory    true isFolderExisted true isFolderExisted false isFolderExisted false

User · Answer

Generate a file from the string of your folder directory   String path  Folder directory       File file   new File path     and use method exist  If you want to generate the folder you sould use mkdir    if   file exists                  System out print  No Folder                file mkdir                System out print  Folder created

User · Answer

To check if a directory exists with the new IO   if  Files isDirectory Paths get  directory                 isDirectory returns true if the file is a directory  false if the file does not exist  is not a directory  or it cannot be determined if the file is a directory or not   See  documentation

User · Answer

Quite simple   new File   Path To File or Directory   exists      And if you want to be certain it is a directory   File f   new File   Path To File or Directory    if  f exists    amp  amp  f isDirectory

User · Answer

You need to transform your Path into a File and test for existence   for Path entry  stream     if entry toFile   exists         log info  working on file     entry getFileName

User · Answer

import java io File  import java nio file Paths   public class Test      public static void main String   args           File file   new File  C   Temp        System out println  File Folder Exist    isFileDirectoryExists file        System out println  Directory Exists    isDirectoryExists  C   Temp             public static boolean isFileDirectoryExists File file           if  file exists                return true            return false         public static boolean isDirectoryExists String directoryPath           if   Paths get directoryPath  toFile   isDirectory                return false            return true

User · Answer

Using java nio file Files   Path path         if  Files exists path                    You can optionally pass this method LinkOption values   if  Files exists path  LinkOption NOFOLLOW LINKS       There s also a method notExists   if  Files notExists path

User · Answer

There is no need to separately call the exists   method  as isDirectory   implicitly checks whether the directory exists or not

User · Answer

From SonarLint  if you already have the path  use path toFile   exists   instead of Files exists for better performance      The Files exists method has noticeably poor performance in JDK 8  and can slow an application significantly when used to check files that don t actually exist     The same goes for Files notExists  Files isDirectory and Files isRegularFile    Noncompliant Code Example   Path myPath  if java nio Files exists myPath         Noncompliant        do something     Compliant Solution   Path myPath  if myPath toFile   exists              do something

[java] How to check if a folder exists

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