java io FileNotFoundException Access is denied

Question

I am trying to read the files inside a folder  but when I run the program it throws this exception  I tried with some other folders also  It throws the same exception   Exception in thread  main  java io FileNotFoundException  C  backup  Access is denied      at java io FileInputStream open Native Method      at java io FileInputStream  lt init gt  Unknown Source

User · Answer

Here s a gotcha that I just discovered - perhaps it might help someone else  If using windows the classes folder must not have encryption enabled  Tomcat doesn t seem to like that  Right click on the classes folder  select  Properties  and then click the  Advanced     button  Make sure the  Encrypt contents to secure data  checkbox is cleared  Restart Tomcat   It worked for me so here s hoping it helps someone else  too

User · Answer

You cannot open and read a directory  use the isFile   and isDirectory   methods to distinguish between files and folders  You can get the contents of folders using the list   and listFiles   methods  for filenames and Files respectively  you can also specify a filter that selects a subset of files listed

User · Answer

check the rsp s reply check that you have permissions to read the file check whether the file is not locked by other application  It is relevant mostly if you are on windows  for example I think that you can get the exception if you are trying to read the file while it is opened in notepad

User · Answer

Also  in some cases is important to check the target folder permissions  To give write permission for the user might be the solution  That worked for me

[java] java.io.FileNotFoundException: (Access is denied)

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