Counter.java

/** Provide a counter for a participant in the simulation.
 * This includes an identifying string and a count of how
 * many participants of this type currently exist within 
 * the simulation */
public class Counter
{
    // A name for this type of simulation participant
    private final String name;
    // How many of this type exist in the simulation.
    private int count;

    /** Provide a name for one of the simulation types.
     * @param name  A name, e.g. "Human" */
    public Counter(String name) {
        this.name = name;
        count = 0;
    }

    /** @return The short description of this type */
    public String getName() {
        return name;
    }

    /** @return The current count for this type */
    public int getCount() {
        return count;
    }

    /** Increment the current count by one */
    public void increment() {
        count++;
    }

    /** Reset the current count to zero */
    public void reset() {
        count = 0;
    }
}