A problem with the File class

serahim

try {
            rs.importApacheLog (file_log); // Call your own method;
            File bkup = new File (file_log);
            bkup.delete ();
        } catch (IOException e) {
            e.printStackTrace ();
        }

What do these two sentences mean? They were deleted after the establishment?
File bkup = new File (file_log);
bkup.delete ();

catmay

It ’s not created, it should be said that it is loaded before it can be deleted.

serahim

Can you tell me the specific reason why this is not done?

dunke0921

File bkup = new File (file_log);
If file_log does not exist before, the operation will not create a related file.
If file_log exists bkup.delete (); will delete it, of course, you have to look at the file attributes

seakey

rs.importApacheLog (file_log); // Call your own method;
// Data processing
 File bkup = new File (file_log);
 bkup.delete ();
// Get a reference to this backup file and delete

serahim

Equal to bkup.delete (); will delete both file_log file and bkup file

sindbad

File bkup = new File (file_log); This statement is to obtain a reference to this file. It is not to create it. If the file does not exist, it will only refer to an empty file. It will be generated when something is written to this reference. a new one.
The meaning of these two sentences is actually the same: delete that file.