Rainfall TXT average help

static void rainfall() {
		try {
			System.out.print("Enter the file name with extension : ");
//			C:\Users\Rach2o4u\workspace\Project 4\src\rainfall.txt
			Scanner input = new Scanner(System.in);

			File file = new File(input.nextLine());
			input.close();

			input = new Scanner(file);

			do {
				String line2 = input.nextLine();

				double value1 = Double.parseDouble(line2);

				if (value1 == -999)
					break;
			    String line = null;
		        double sum = 0;
		        double count = 0;
		        while ((line = input.nextLine()) != null) {
		            String[] vals = line.split(" ");
		            for(int i = 0; i < vals.length; i++) {
		                sum += Double.valueOf(vals[i].trim());
		                count++;
		            }
		        }
		        System.out.println("the average is = " + ((double) sum / count));



				System.out.println(value1);
			} while (input.hasNextLine());
			input.close();

		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}
	private static int countnums(String file) {
		int count = 0;
		if (line.charAt(0) != ' ') {
			count++;
		}
		for (int i = 0; i < line.length(); i++) {
			if ((line.charAt(i) == ' ')) {
				count++;
			}
		}
		return count;
	}