JAVA聊天3、当机器内装有多个SDK版本时，如何查看所用的是哪个SDK？ java -verbose 在出现的屏幕信息中可以看出系统装载的是哪个目录下的文件。-Java Chat 3, when the machines contain a number of SDK version, see how it is used in which SDK? Java-verbose in the screen information can be seen loading system which

本系统主要是针对用户和学生的，用户的信息是直接在注册的时候保存到数据库中的。(This system is mainly aimed at users and students, and the information of users is directly stored in the database when registered.)