Is there a way to get the current GPS time and TAI time?
( System.currentTimeMillis()'s return value is POSIX time, which isn't a linear representation of time. )
Your option is to look at the ThreeTen project, which is the reference implementation of the
JSR-310 (new Java Date and Time spec). You can find a TAIInstant class in the javadocs
It's claimed to be still in alpha, though
来源：https://stackoverflow.com/questions/8849553/how-to-get-gps-time-and-tai-time-in-java