用java编写的手写体数字识别，采用knn方法，识别的训练和测试对象来自mnist数据库的数据，已经将解压后文件放进去了，算法包括文件的读取，测试部分还有识别算法。 -Written by java handwriting digital recognition, using knn method to identify the training and test objects the mnist data, has been extracted after the file into t