/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

import java.time.* ;
import java.time.format.* ;

/* 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
	{

DateTimeFormatter f = DateTimeFormatter.ofPattern( "uuuu-MM-dd'T'HH:mm:ss.SSSX" , Locale.ROOT ) ;

String input = "2019-02-28T12:17:46.279+0000" ;
OffsetDateTime odt = OffsetDateTime.parse( input , f ) ;

String output = odt.toString() ;

System.out.println( "output: " + output ) ;

	}
}