onlinecounter.java

有简单的网上书店需求及设计流程

package org.wiely.model;
/**
 * @see a counter for project to count the persons.
 */
public class OnlineCounter {
	private static long count;

	public static long getCount() {
		return count;
	}

	public static void raise() {
		count++;
	}

	public static void reduce() {
		count--;
	}

}