Question

I have installed openjdk-6-jdk on my machine linux , the function renameTo does not work ?
have you an idea please about this problem ?

Thank you.

Answer 1

At run time the program does not rename the file (it does not moving the file).. i have an error when the programm will use the file in the new destination (when i insert command linux mv in my code java it works !!!)

Based on those symptoms, I’d say that you are attempting to rename a file from one file system to another.

The "mv" command can do this, but the File.renameTo(...) cannot. (And incidentally, neither can the "rename" system call.) This is not an OpenJDK bug. Rather it is a documented limitation. The javadoc says this:

"Many aspects of the behavior of this method are inherently platform-dependent: The rename operation might not be able to move a file from one filesystem to another, it might not be atomic, and it might not succeed if a file with the destination abstract pathname already exists. The return value should always be checked to make sure that the rename operation was successful.

Note that the Files class defines the move method to move or rename a file in a platform independent manner."

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The fact that it works on some other machine may simply be down to the fact that the source and destination for the move are in the same file system.