delete non-empty folder?

[Kaidi]

I just wonder is there any "one step" method to delete a folder even
it is not empty?
I know the java.io.File has delete for empty folders. Surely we can
write something recursively to first delete the folder's content
before we delete the folder, but any other way?

Thanks.

 

[Paul Lutus]

I just wonder is there any "one step" method to delete a folder even
it is not empty?
I know the java.io.File has delete for empty folders. Surely we can
write something recursively to first delete the folder's content
before we delete the folder, but any other way?

No, AFAIK, there is no other way within Java.

 

[xarax]

No, AFAIK, there is no other way within Java.

And you have to handle the situation of nested
folders by building your own in-memory representation
of the folder tree structure, then delete from the bottom
to the top using a depth-first tree walk. And you have
to take care that you handle the situation where new
files or folders are created by an asynchronous process
while you're scanning/deleting.

Good luck.

 

[Frank]

And you have to handle the situation of nested
folders by building your own in-memory representation
of the folder tree structure, then delete from the bottom
to the top using a depth-first tree walk.

Why wouldn't a simple post-order traversal work?

E.g.:

void delTree(File dir) {
for each file in dir {
if (file.isDirectory()) {
delTree(file);
}
file.delete();
} // end for
}

-Frank

 

[Ann]

I just wonder is there any "one step" method to delete a folder even
it is not empty?
I know the java.io.File has delete for empty folders. Surely we can
write something recursively to first delete the folder's content
before we delete the folder, but any other way?

Thanks.

call a method(), that is only one step