jacksun是checksum的独立工具平台，完全用java编写，用于计算和校验checksum-Jacksum is a platform independent checksum utility (written entirely in Java) for computing and verifying (integrity check) checksums, CRC and hashes (fingerprints). It supports 58 popular hash algori

java实现的EMS单号计算方法，用于计算连续单号和校验之用-The realization of Java EMS order calculation method

该程序代码实现的功能是找出$GPRMC语句，计算校验和，找出其中校验正确，并且字段2表示已定位的语句，从中计算出时间，换算成北京时间。一次数据中会包含多条$GPRMC语句，以最后一条语句得到的北京时间作为结果输出。-The function of the program code to achieve is to find $GPRMC statement, calculate the checksum, find out the check is correct, and field said