File.canWrite is not working as per expectations

Question

i am trying to check whether a file is writable or not. i have changed the file permission by myself for all users. but if i try to run the program, it show "true" as a response. if i allow the permissions, then also it is showing "true".

Whats is my problem?

try
  {

     File file = new File("D:/myproject_log/delivery_report_edr.out"); 

        if(!file.canWrite())
        {
            System.out.println("you can't write!!!");
        }
        else
            System.out.println("you can write!!!");
  }
  catch(Exception e)
  {
      e.printStackTrace();
  }

Answer 1

Have you tried using the java.nio.file.Files#isWritable method. as well as File#canWrite ?

Answer 2

It is working fine. I copied your code and run it twice. First I got You can write, then right click on the file folder, go to properties and select read only and run the program again and I got you can't write

So as per the documentation of the method canWrite() it gave me the expected output. Please confirm your settings once again and check.