java - InputMismatchException when scanning file of integers -

when run code, inputmismatchexception (see comment). why happen? file want read contains list of integers separated spaces.

below main method.

    public static void main (string[] args) throws exception {      scanner in = new scanner(system.in);     system.out.println("enter file name: ");         string fname = in.nextline();         system.out.println("enter starting x coordinate: ");     int x = in.nextint();     system.out.println("enter starting y coordinate: ");     int y = in.nextint();      coordinate startposition = new coordinate(x, y);      in.close();      watermesa wm = new watermesa(fname);          scanner fs = new scanner(fname);      grid_width = fs.nextint();      // exception occurs here     grid_height = fs.nextint();     // , possibly here too?      int = 0;     (int r = 0; r < grid_width; r++) {           (int c = 0; c < grid_height; c++) {             = fs.nextint();             grid[r][c] = i;              jpanel panel = new jpanel();             primary.add(panel);      fs.close();      wm.canflowoffmap(startposition);          }     }     } 

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you're scanning file name string, not content of file. change scanner fs = new scanner(fname); scanner fs = new scanner(new file("/path/to/your/files/"+fname));.