Public static string long tote(long lo){

Date date = new date (LO);

simple date format SD = new simple date format(" yyyy-MM-DD HH:MM:ss ")；

Returns sd.format (date);

?

}

Data expansion:

Long is a computer programming language, which is the representation of data types in programming. Long is generally used to express length. Long is a signed 64-bit integer with the range of -2 63-2 63- 1 int 64.