证书制作工具。运行KeytoolGUI小工具目录下run.cmd即可启动KeytoolGUI小工具，该工具不用安装，就类似DOS下的工具（有关说明书中写到“该工具需要有jre环境即Java运行环境，最好是1.4版本。设置好jre/bin路径，达到在命令行中键入java命令可以出现提示的效果后，运行run.cmd即可启动”-KeytoolGUI，run in dos mode.

命令行程序。在dos命令行中启动和运行。输入“最小化”最小化，“退出”退出程序。只是框架，更多功能请自便。-It s a java program which should be started and running in dos command line。input "退出"to exit,and "最小化"to iconify.It s just a frame that only surpport those two words,other words to be added by yo