Java time-related operations

1. Time to format

//Control the time format, hh indicates a system of Hours,hh is a one-hour system

simpledateforma t sdf =  new "Yyyy-mm-dd hh:mm:ss :SSS "

DATE  Date=new   Date () .

//Date Turn String

String begin = Sdf.format (date);

//String turn Date

Date ABC =sdf.parse (begin);

2. Modification Time:

Calendar cal = Calendar. getinstance ();

Cal . SetTime (new Date ()); //Get current time ;

cal .add (Calendar. year , +2);// year plus 2

Cal . Add (Calendar. MONTH , +1);// monthly plus 1

Cal.add (Calendar.day_of_month, +7);

Cal.add (Calendar. HOUR , +23);

Cal.add (Calendar. MINUTE , +59);

Cal.add (Calendar. SECOND , +59);

Date D=cal.gettime ();

3, to find the difference in date:   

SimpleDateFormat df = New   SimpleDateFormat ("Yyyy-mm-dd HH:mm:ss");

Date begin = NULL ; //

Date end = NULL ; // if compared to the current time: cal.gettime ()

Try  {

begin = Df.parse ("2004-01-02 11:30:24");

end = Df.parse ("2005-01-02 11:31:25");

} catch (ParseException e) {

//  TODO auto-generated Catch block

E.printstacktrace ();

}

Long between= (End.gettime ()-begin.gettime ())/1000; //divided by 1000 for conversion into seconds

int int

int int )   (between% (24*3600)/3600); 

int minute= (int) (BETWEEN%3600/60); //remaining points

4. Set method default setting 23:59:59

Public void setEndtimeTw0(Date endtime) {

Calendar cal = Calendar. getinstance ();

Cal.settime (Endtime);

Cal.add (Calendar. HOUR , +23);

Cal.add (Calendar. MINUTE , +59);

Cal.add (Calendar. SECOND , +59);

This . Endtime = Cal.gettime ();

}

Java time-related operations