public class Single {
private static Single s=null;
private Single(){}
public static Single getInstance()
{
if(s==null)
{
synchronized(Single.class)
{
if(s==null)
s=new Single();
}
}
return s;
}
}
延迟加载的单例设计模式
最新推荐文章于 2019-08-15 13:08:16 发布