Get Current System Time And After That Want To add 30 minutes in That Time

Question

I want to get current time in my application.
Then i want to add 30 minutes in the current time.
can any one help me how to achieve this?

I am getting start and stop time from my web service. eg: ((start time)11:00 am to (stop time) 11:00 pm) now i want to add 30 minutes in the current time till the stop time reach.

Answer 1

Calendar now = Calendar.getInstance();
now.add(Calendar.MINUTE, 30);

And to output the time you could use

// 24 hours format
SimpleDateFormat df = new SimpleDateFormat("HH:mm");
// AM/PM format
SimpleDateFormat df = new SimpleDateFormat("hh:mm aa");

System.out.println(df.format(now.getTime()));

Answer 2

Use the following:

//get current Time
long currentTime = System.currentTimeMillis();
//now add half an hour, 1 800 000 miliseconds = 30 minutes
long halfAnHourLater = currentTime + 1800000;

Answer 3

System.currentTimeMillis()+(30*60*1000);