《计算器》这个小程序是用JAVA编的，相信一定有不少朋友不想浪费宝贵的时间去编写这么无聊的课程设计吧，我提供出来，就让大家当个参考吧-"calculator" This procedure is a small addendum to the JAVA, I believe we have a lot of friends do not want to waste valuable time to prepare so boring curriculum design, I