File source=new File(fname1);
System.out.println("souce name "+fname1);
File dest = new File("F:\\BackupFiles",source.getName());
try 
{
   FileUtils.moveFile(source, dest);
   source.delete();
} 
catch (IOException ex) 
{
Logger.getLogger(FileCompare.class.getName()).log(Level.SEVERE, null, ex);
}
System.out.println("file moved successfully...");

the above code throws exception

"java.io.IOException: Failed to delete original file 'C:\xampp\htdocs\eyeOS\eyeos\users\ajkani\files\html.txt' after copy to 'F:\BackupFiles\html.txt' "

and i tried to delete the file after copied it to the destination but unable to delete.

i tried deleteOnExit() method instead of delete() but nothing works.

i have used md5 algorithm to check the similarity of two files. if the files are not same.i want to move the files to destination directory.