java傅里叶转换

说明：  J2EE规范的JAAS开发安全实例：介绍了J2EE的安全模式、中间件应用的JAAS实现。(J2EE standard JAAS security development examples : a J2EE security model, middleware applications JAAS achieve.)

JSP、Servlet入门范例。实现留言版程序，支持连接sybase和Oracle数据库-JSP, Servlet entry model. Achieving message boards that will support connectivity sybase and Oracle database

Implementation algorithm to change contrast of an image

Request Proxy Authentication for Andriod.

一个socket服务器端java源程序-a socket server-side java source

一个java计算器-a calculator

java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题java入门作业习题

用JAVA人眼图形-eyes with Java graphics

说明：  数字签名的基础是公钥和私钥的非对称加密，发送者使用私钥加密消息摘要（签名），接收者使用公钥解密消息摘要以验证签名是否是某个人的。(The foundation of digital signature is asymmetric encryption of public key and private key. The sender encrypts message digest (signature) with private key, and the receiver decrypts message digest with public key to verify whether the signature is someone.)

以前做的android的FTP demo，功能没有完全实现，上传和下载的限速是虚拟的(The FTP demo of Android has not been fully implemented. The speed limit of upload and download is virtual)