Static Variable

public class tuna {
    private String first;
    private String last;
    private static int members = 0;

    public tuna(String firstname, String lastname){
        first = firstname;
        last = lastname;
        members++;
        System.out.printf("Constructor for %s %s, members in the club is %d\n", first, last, members);


    }

    public String getFirst(){
        return first;

    }
    public String getLast(){
        return last;
    }

    public static int getMembers(){
        return members;
    }

}