public class Stat {
    public static void main(String[] args) {
        Stat.addTo5(6);
        Stat s = new Stat();
        s.addToAa(6);
    }

    private int aa=5;

    public int addToAa(int val) {
        return aa + val;
    }
    
    public static int addTo5(int val) {
        return val + 5;
    }
}