import java.util.HashMap;

public class Counter<T> {
    private final HashMap<T, Integer> map = new HashMap<T, Integer>();

    public int get(T key) {
        final Integer n = map.get(key);
        return n == null ? 0 : n;
    }

    public void count(T key) {
        map.put(key, get(key) + 1);
    }
    
    public HashMap<T, Integer> getMap() {
    	return map;
    }
}