1 class Singelton {
2 private static singleton instance;
3 //构造方法让其private，这就封住了外界利用new创建实例的可能
4 private Singleton(){}
5
6 //该方法是活的哥本类实例的唯一全局访问点
7 public static Singleton GetInstance(){
8
9 //若实例不存在，则new一个新实例，否则返回已有的实例
10 if (instance == null){
11 instance=new Singleton()
12 }
13
14 return instance ;
15
16 }
17 }
1 //实现赖式单态类
2 private static ControlConfigurationFiles object = null;
3
4 public static synchronized ControlConfigurationFiles getInstance(ServletContext context) {
5 //获取web项目中ccs的配置文件
6 ControlConfigurationFiles.filePath = context.getRealPath("/WEB-INF/classes/ccs.properties");
7
8 if (object == null) {
9 object = new ControlConfigurationFiles(ControlConfigurationFiles.filePath);
10 }
11
12 return object;
13 }
