Subscriber

package subscribers;

import java.util.Comparator;

public abstract class Subscriber implements Comparator<Subscriber> {
    protected static int idCounter = 0;
    protected int id;
    protected String name;


    public void setID() {
        idCounter += 1;

        this.id = idCounter;
    }
    public int getID( ) {
        return id;
    }

    public void setName(String name) {
        this.name = name;
    }
    public String getName() {
        return name;
    }


    public Subscriber(String name) {
        setID();
        setName(name);
    }

    @Override
    public String toString() {
        return String.format("(%s::%h)\tname=%s\t\tid=%d",
                            this.getClass().getName(), this, name, id);
    }

    @Override
    public int compare(Subscriber s1, Subscriber s2) {
        return s1.getName().compareTo(s2.getName());
    }
}