小型倒计时计数，测试Android按钮的程序-Small countdown count, the program of testing Android button

收集了28个Java开发常用的工具类库源码，比如Base64.java加密解密、FileHelper.java文件帮助类、FileUploadUtil.java文件上传类、MD5Encrypt.java MD5加密类、MyFileFilter.java文件滤镜类、DateHandler.java类、Counter.java功能计数类等，另外还有CConst.java、Escape.java、SimpleConfig.java、StringHelper.java、CharTools.java等。C

简单的计数软件，装在手机上可以进行计数，与秒表类似。界面简洁，内容丰富。-Simple counting software, installed on the phone can be counted, and the stopwatch is similar. Interface is simple and rich in content.