packagecom.qfedu;importjava.text.SimpleDateFormat;importjava.util.Calendar;importjava.util.Date;publicclassTestDate{publicstaticvoidmain(String[] args){// System.currentTimeMillis()当前系统的时间,单位是毫秒System.out.println(System.currentTimeMillis());longx=System.currentTimeMillis();Datey=newDate(...