How do I programmatically change file permissions?

Question

In Java, I\'m dynamically creating a set of files and I\'d like to change the file permissions on these files on a linux/unix file system. I\'d like to be able to execute t

Answer 1

If you want to set 777 permission to your created file than you can use the following method:

public void setPermission(File file) throws IOException{
    Set perms = new HashSet<>();
    perms.add(PosixFilePermission.OWNER_READ);
    perms.add(PosixFilePermission.OWNER_WRITE);
    perms.add(PosixFilePermission.OWNER_EXECUTE);

    perms.add(PosixFilePermission.OTHERS_READ);
    perms.add(PosixFilePermission.OTHERS_WRITE);
    perms.add(PosixFilePermission.OTHERS_EXECUTE);

    perms.add(PosixFilePermission.GROUP_READ);
    perms.add(PosixFilePermission.GROUP_WRITE);
    perms.add(PosixFilePermission.GROUP_EXECUTE);

    Files.setPosixFilePermissions(file.toPath(), perms);
}