MIP-02-01

package net.forlornly;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;
import java.util.function.Consumer;
import java.util.function.Predicate;

class BiggerThanOrEqualToZeroCounter<E> implements Predicate<Integer>, Consumer<Integer>
{
    private int counter = 0;

    @Override
    public boolean test(Integer i) {
        return i >= 0;
    }

    @Override
    public void accept(Integer i) {
        counter++;
    }

    public void resetCounter() {
        counter = 0;
    }

    public int getCounter() {
        return counter;
    }
}

public class PositiveNumbersCounter {

    /**
     * @param args
     */
    public static void main(String[] args) {
        try {
            int total = 0;
            List<Integer> list = new ArrayList<Integer>();

            Scanner scanner = new Scanner(new File("input.txt"));

            scanner.useDelimiter("[,\n\r]");

            while (scanner.hasNext()) {
                String s = scanner.next();

                try {
                    int i = Integer.parseInt(s);

                    list.add(i);

                    if (i >= 0) {
                        total++;
                    }
                } catch (NumberFormatException e) {
                }
            }

            scanner.close();

            System.out.println("Total: " + total);

            BiggerThanOrEqualToZeroCounter<Integer> btoetzc = new BiggerThanOrEqualToZeroCounter<>();
            list.stream().filter(btoetzc).forEach(btoetzc);
            System.out.println("Total: " + btoetzc.getCounter());
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
    }
}