JAVA笔记1--如何获取年月日时分秒毫秒

Calendar CD = Calendar.getInstance();
int YY = CD.get(Calendar.YEAR) ;
int MM = CD.get(Calendar.MONTH)+1;
int DD = CD.get(Calendar.DATE);
int HH = CD.get(Calendar.HOUR);
int NN = CD.get(Calendar.MINUTE);
int SS = CD.get(Calendar.SECOND);
int MI = CD.get(Calendar.MILLISECOND);