This paper illuminates the simulation procedure of bp network by java technique in detail , explains the basic structure of the bp network of the simulation system and the description ability of java which as the facility of describing the artificial neural network . especially it describes the object - oriented structure , and the object - oriented technique of java , introduces the using flow chart . by testing , we draw out the impression picture 本文详细阐述了java技术仿真bp网络的过程，阐明了仿真系统中bp网络模型的基本结构以及java作为描述神经网络工具所提供的描述功能，尤其描述了仿真系统的面向对象层次结构及使用java的面向对象技术，并对bp网络的各个类进行面向对象分析，介绍了仿真系统的使用流程图。
