I/O Question.

[Nabila Mohammad]

Hi.
This is a simple program, though it looks long.
All i have done is created 2 Directories.
In the Directory1, I have created 3 files, and deleted the second directory.
I have then renamed the Directory1 and tried to Delete it after Deleting the files( as directories won't be deleted unless they are empty.
How ever, for some reason my files arent gettting deleted due to which the directory is not getting Deleted.
I am not sure where the problem.
Could it be because when I have created a file , i have created it in the Directory1 folder and not the renamed Directory.
That was just a guess.

Here is the code.
Hope some one can help me out.
Thanks.

   
import java.io.*;
 

class FileN2
{
 
public static void main(String[] args)
{
try{
File Dir1=new File("dir1");
Dir1.mkdir(); // Creating a new directory Dir1

File file1=new File("Dir1","File1.txt");
file1.createNewFile();
 
File file2=new File("Dir1","File2.txt");
file2.createNewFile();

File file3=new File("Dir1","File3.txt");
file3.createNewFile();
 
System.out.println("Dir1 is deleted " + Dir1.delete());//false
Dir1.delete();// false
System.out.println("Dir1 is deleted after delete() " + Dir1.delete());// false
 
File Dir2=new File("dir2"); // Creating a new directory Dir2
Dir2.mkdir(); // Creating a new directory Dir2
 
System.out.println(Dir2.exists());//true
System.out.println("Dir2 is deleted " + Dir2.delete());// true
 
File RenDir=new File("renDir");// New file instance
Dir1.renameTo(RenDir);// Renaming Dir1 to rendir
 
System.out.println("Dir1 exists after RENAMING " + Dir1.exists()); //false
System.out.println("Dir2 exists after DELETING " + Dir2.exists()); //false
 
file1.delete(); // Deleting file1
 
System.out.println(file1.exists()); //false
System.out.println(file2.exists()); // true
System.out.println(file3.exists()); //true
 
System.out.println("file2 is being deleted"+file2.delete()); //Deleting file2
 
System.out.println("Renamed Directory is being tRIED TO deleted " + RenDir.delete()); // false, still contains file3
System.out.println("Renamed still exists" + RenDir.exists()); //true
 
System.out.println("file3 is being deleted"+file3.delete()); //file3 is deleted.
 
System.out.println("Does renamed directory still exist??? " + RenDir.exists());

 
System.out.println("RENAME finally being DELETED" + RenDir.delete()); //true ie. no files exist
System.out.println("REname no long lives and has taken it last breadth..sniff sniff ");
System.out.println("Does the renamed direcotry still exist?" + RenDir.exists());
//false
 
}
 catch (IOException e)
{
System.out.println("Exception Caught");
}
 
}
}
 

[Irina Goble]

Originally posted by Nabila Mohammad:
Could it be because when I have created a file , i have created it in the Directory1 folder and not the renamed Directory.
That was just a guess.

That is correct. To see what happens, use a print statement:

        System.out.format("Deleting %s: %b%n", file1, file1.delete());

It will print the file name and the result of the delete() call. To remove files from the renamed directory, use the list() or listFiles() methods of the File class.

        for (File f : RenDir.listFiles()) {
            System.out.format("Deleting %s: %b%n", f, f.delete());
        }

PS. File names can be case-sensitive.

[Nabila Mohammad]

Thanks Alot.