从目录中删除RandomAccessFile

Question

I have a random access file that holds some information generated at run time that needs to be deleted from the directory when the program terminates. From what I have found, random access files don't have a delete method like regular files and all that I have found is:

RandomAccessFile temp = new RandomAccessFile ("temp.tmp", "rw");
temp = new File(NetSimView.filename);
temp.delete();

This obviously doesn't work, and I haven't been able to find anything on NetSimView. Any ideas?

Answer 1

RandomAccessFile does not have a delete method. Creating a new File object for the file to be deleted is fine. However, before doing that, you need to insure the RandomAccessFile that references the same file is closed by calling RandomAccessFile.close()

If you want to have the file deleted when the program terminates, you can do something like:

File file = new File("somefile.txt");

//Use the try-with-resources to create the RandomAccessFile
//Which takes care of closing the file once leaving the try block
try(RandomAccessFile randomFile = new RandomAccessFile(file, "rw")){

    //do some writing to the file...
}
catch(Exception ex){
    ex.printStackTrace();
}

file.deleteOnExit(); //Will delete the file just before the program exits

Notice the comments above the try statement, using a try-with-resources and also notice the last line of code where we call file.deleteOnExit() to delete the file upon program termination.