Problem In Deleting file

Question

When I call fileone.exists()
It is returning true.
But I am unable to delete file even after calling fileone.delete();
There are some tabs in Swings. From deletion tab I am trying to delete. But I am unable to delete.
I tried to delete the same file from a simple Java file I am able to delete it.
Is there any lock preventing me from deleting the file ?
Any help is appreciated.............

Answer 1

As you can see in many threads, people talks about a bug in some JVM implementations preventing files to be deleted even if you have closed any stream related to it. I tried many times to delete files to no success until I read some posts advising to use the System.gc() method to destroy any object previously closed (but presumably still existing).
I tried
System.gc();
for(File iterator: arrayOfFiles)
iterator.delete();
but the result I obtained wasn't totally satisfactory, because the first files from the array of files weren't delete while the last ones were. So I thought that maybe the problem is the garbage collector had no time to "act" before the first files were deleted. My (not quite elegant, but effective) solution was to introduce a delay of 500ms between the garbage collector request and the first delete statement. I know you have no warranty about the garbage collector acting when you ask it to, but... Anyway, this is my code:
System.gc();
Thread.sleep(500); // delay to allow the garbage collector to do its work before any deletion is attempted
for(File iterator: arrayOfFiles)
iterator.delete();
As I could see, it works 100% the times I tested it.
I don't know if this "solution" was mentioned before or not but, in either case, I hope this helps someone.
Regards