How to check write permissions of a directory in java?

Question

I would like a code snippet that checks whether a directory has read/write permissions and do something if it does, and does something else if it doesnt. I tried an example

Answer 1

if you just want to check if you can write:

File f = new File("path");
if(f.canWrite()) {
  // write access
} else {
  // no write access
}

for checking read access, there is a function canRead()

Answer 2

You should use the path of the directory alone ("/tmp") to query the permissions of a directory:

AccessController.checkPermission(new FilePermission("/tmp", "read,write"));

With "/tmp/*" you query the permissions of all files inside the /tmp directory.