Java better way to delete file if exists

Question

We need to call file exists   before file delete   before we can delete a file E g    File file         if  file exists          file delete           Currently in all our project we create a static method in some util class to wrap this code  Is there some other way to achieve the same   so that we not need to copy our utils file in every other project

User · Answer

Use Apache Commons FileUtils deleteDirectory   or FileUtils forceDelete   to log exceptions in case of any failures   or FileUtils deleteQuietly   if you re not concerned about exceptions thrown

User · Answer

There s also the Java 7 solution  using the new ish  Path abstraction    Path fileToDeletePath   Paths get  fileToDelete jdk7 txt    Files delete fileToDeletePath     Hope this helps

User · Answer

Apache Commons IO s FileUtils offers FileUtils deleteQuietly      Deletes a file  never throwing an exception  If file is a directory  delete it and all sub-directories    The difference between File delete   and this method are          A directory to be deleted does not have to be empty    No exceptions are thrown when a file or directory cannot be deleted       This offers a one-liner delete call that won t complain if the file fails to be deleted   FileUtils deleteQuietly new File  test txt

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This is my solution   File f   new File  file txt    if f exists    amp  amp   f isDirectory           f delete

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Starting from Java 7 you can use deleteIfExists that returns a boolean  or throw an Exception  depending on whether a file was deleted or not  This method may not be atomic with respect to other file system operations  Moreover if a file is in  use by JVM other program then on some operating system it will not be able to remove it   Every file can be converted to path via toPath method   E g    File file        boolean result   Files deleteIfExists file toPath       surround it in try catch block

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file delete     if the file doesn t exist  it will return false

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Use the below statement to delete any files    FileUtils forceDelete FilePath     Note  Use exception handling codes if you want to use

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if you have the file inside a dirrectory called uploads in your project  bellow code can be used  Path root   Paths get  quot uploads quot    File existingFile   new File this root resolve  quot img png quot   toUri      if  existingFile exists    amp  amp  existingFile isFile           existingFile delete          OR If it is inside a different directory this solution can be used  File existingFile   new File  quot D    lt path gt   img png quot     if  existingFile exists    amp  amp  existingFile isFile          existingFile delete

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File xx   new File  filename txt        if  xx exists             System gc     Added this part        Thread sleep 2000      This part gives the Bufferedreaders and the InputStreams time to close Completely        xx delete

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I was working on this type of function  maybe this will interests some of you      public boolean deleteFile File file  throws IOException       if  file    null            if  file isDirectory                  File   files   file listFiles                 for  File f  files                    deleteFile f                                   return Files deleteIfExists file toPath               return false

[java] Java better way to delete file if exists

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