单例模式 引用:http://zhidao.baidu.com/question/135442203.html&__bd_tkn__=2ab95b3a06619a2e4d5cec6fbdfe20ad9242d5f68078338d51fed8133ea5c69d362ad36bb4bcda3b39bb3949f6bbe47087ac3af56e60b1f4e7eb6015795ff8369965abf85d0f03de0125277ba037b00a4a749b707e58cd8ed24c437e075d4029bb10093a48c1a9d8ee7bfaaccbdc8c0bcb3724f74dad private static Control ControlAdapter = null; /** * 此类使用单例模式,方法取得单例类对象 * */ public static Control getInstance(){ if(ControlAdapter == null) ControlAdapter = new ControlAdapter(); return ControlAdapter; } 单例模式 可以防止 数据的冲突,节省内存空间