In this paper,Facade design pattern is first introduced for the development of applications based on J2EE,and the remote call under the J2EE architecture is analyzed. The implementation of EDT(encapsulated data type)is described.

• 基于J2EE的应用程序开发所使用的Facade设计模式,进行J2EE中远程调用的分析,实现EDT(封装数据类型);