Permission to create file in directory

Question

Hi all,
I want to check permission in directory. ie. if user have permission to create a file in directory.
how can i check this.
for testing i wrote this program and i disabled all permissions for user (like read, write ) from security tab of directory properties.
so i was not able to open the directory
but it seems that canRead and canWrite are not working
public class Check {
      * @param args
     public static void main(String[] args) {
          File s = new File("c:/testing/thisdir");
          if (s.exists() && s.isDirectory()) {
               System.out.println("exists");
               if(s.canRead()&& s.canWrite()){
                    System.out.println("read n write possible");                    
               }else{
                    System.out.println("read n write impossible");
          } else {
               System.out.println("does not exists");
Output :
exists
read n write possibleAny comments why its so...

Answer 1

hi dcminter ,
just now changed the code ... and rechecked the permissions also ... and found that program is unable to write file inside directory...it throws following exception "java.io.IOException: Access is denied"
but still
canRead and canWrite method returns true ... i dont know why it is so
public class Check {
      * @param args
     public static void main(String[] args) {
          try {
               File s = new File("c:/testing/thisdir");
               if (s.exists() && s.isDirectory()) {
                    System.out.println("exists");
                    if (s.canRead() && s.canWrite()) {
                         System.out.println("read n write possible");
                    } else {
                         System.out.println("read n write impossible");
                    File ss = new File("c:/testing/thisdir/a.txt");
                    ss.createNewFile();
               } else {
                    System.out.println("does not exists");
          } catch (FileNotFoundException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
          } catch (IOException e) {
               // TODO Auto-generated catch block
               e.printStackTrace();
}