File.createNewFile（）给出java.io.IOException：权限被拒绝

Question

My OS is fedora and I use the following code to create a file:

String destFile = "/var/www/html/nykkos/app/webroot/AssimilatorGenerator/Script_May6/db/"+"musics.db";
File destinationFile= new File(destFile);
if(!destinationFile.exists()) {
destinationFile.createNewFile();
}

It gives me the following exception at the line destinationFile.createNewFile()

java.io.IOException: Permission denied

Why this exception occurs and how can I overcome the same?

Answer 1

sudo chmod a+rwx /var/www/html/nykkos/app/webroot/AssimilatorGenerator/Script_May6/db changes the rights for all to the directory. Better look first whether chown , changing the owner/group might do. Or a combination of same group and giving the group all rights.

BTW createNewFile is seldom needed.

Answer 2

It is probably because the user you are running the JVM with has not the right permission to write at that path. But please post more deatils for a better answer.

Answer 3

You have to check owner mode and permission setting of parents directories setting. If there is no write permission in Your OS, you will get the exception.