Printing out datetime in a specific format in Java?

Question

I want to print out datetime in java in a specific format. I have this C# code which prints out the datetime in this format.

DateTime value = new DateTime(2         


        

Answer 1

If you need date in 24 hour system then use this approach

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy HH:mm:ss");
Date custDate = new Date();
System.out.println(sdf.format(custDate));

Please note in 24 hour system there is no need to show AM/PM.

If you want date in 12 hour system then use below approach

SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy hh:mm:ss a");
Date custDate = new Date();
System.out.println(sdf.format(custDate));

"a" in the date format will help to show AM/PM.

Please import below classes for above code to work

java.text.SimpleDateFormat

java.util.Date

Answer 2

Please try to this one

public void Method(Datetime time)
{
    
    time.toString("yyyy-MM-dd'T'HH:mm:ss"));
}

Answer 3

Approach 1: Using java.time.LocalDateTime. (Strongly Preferred)

DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
LocalDateTime now = LocalDateTime.now();
System.out.println(dtf.format(now)); //2016/11/16 12:08:43

Approach 2: Using java.util.Date.

DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Date date = new Date();
System.out.println(dateFormat.format(date)); //2016/11/16 12:08:43

Approach 3: Using java.util.Calendar.

DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss");
Calendar cal = Calendar.getInstance();
System.out.println(dateFormat.format(cal)); //2016/11/16 12:08:43

Answer 4

LocalDate.of(2010, 1, 18).atStartOfDay().format(DateTimeFormatter.ofPattern("MM/dd/yyyy HH:mm:ss a"))

or

LocalDate.of(2010, 1, 18).atTime(12, 0, 0).format(DateTimeFormatter.ofPattern("MM/dd/yyyy HH:mm:ss a"));

if you want to add the time too