l15040141540的专栏

package lqs; import java.io.*; import java.sql.*; public class myJDBC { private String DBDriver; //JDBC驱动 private String url; //数据库路径 private String useName; //登陆数据库的用户名 private String

首先开发一个对在线人数进行统计的类Count. package Listener; public class Count { private static int count=0; public static int getOnline() { return count; } public static void raise() { count++; } pub