how to check and close if an excel file is already open in java [duplicate]

Answer 1

Did you do some Google search on this topic: Here is some I came up with

• Java: Check if file is already open
• check if a file is already open before trying to delete it
• checking that an excel file is already opened by another application

I am copying the answer from the first question on stackoverflow here:

File file = new File(fileName);
FileChannel channel = new RandomAccessFile(file, "rw").getChannel();
// Get an exclusive lock on the whole file
FileLock lock = channel.lock();
try {
    lock = channel.tryLock();
    // Ok. You get the lock
} catch (OverlappingFileLockException e) {
    // File is open by someone else
} finally {
    lock.release();
}

Hope this will be of help.

Answer 2

Have you tried this:

File file = new File(pathToFile);
if (file.canRead()) {
  <do whatever you are doing with the file>
}