人工神经网络反映了人脑功能的若干基本特性，但并非生物系统的逼真描述，只是某种模仿、简化和抽象。用java语言实现神经网络算法。-ANN reflects certain fundamental human characteristics of brain function, but not a realistic descr iption of biological systems, but some kind of imitation, simplification and abstracti