Count Numeric

import java.io.File;
import java.util.Map;
import java.util.Scanner;
import java.util.TreeMap;
import java.util.regex.Pattern;

public class Main {
  public static void main(String[] args) {
    Scanner in = null;
    try {
      in = new Scanner(new File(args[0]));
    }
    catch (Exception e) {
    }
    Map<Integer, Integer> map = new TreeMap<Integer, Integer>();
    Pattern p = Pattern.compile("\\d");
    while (in.hasNext(p)) {
      int i = 0;
      try {
        i = new Integer(in.next(p));
      }
      catch (Exception e) {
      }
      if (map.get(i) == null) map.put(i, 0);
      else map.put(i, map.get(i) + 1);
    }
    System.out.println(map);
  }
}