/* package whatever; // don't place package name! */
 
import java.util.*;
import java.lang.*;
import java.io.*;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
 
/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
	public static void main (String[] args) throws java.lang.Exception
	{
		Date startUserDate = new Date("02/20/2002");
		DateFormat df2 = new SimpleDateFormat("MM/dd/yyyy");
		System.out.println("Previous date: "+df2.format(startUserDate));
		DateFormat df = new SimpleDateFormat("MM/dd/yyyy HH:mm:ss");
String timeString = df.format(new Date()).substring(10); // 10 is the beginIndex of time here
 
 
String startUserDateString = df2.format(startUserDate);
 
startUserDateString = startUserDateString+" "+timeString;
// you will get this format "MM/dd/yyyy HH:mm:ss" 
 
//then reparse the new date here
startUserDate = df.parse(startUserDateString);
System.out.println("Formatted date is: "+df.format(startUserDate));
	}
}

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