ADDITIONAL SYSTEM INFORMATION :
Windows 7 64bits, Java \jdk1.8.0_191 (download today)

A DESCRIPTION OF THE PROBLEM :
When formatting a 'java.util.Date' containing 31/12/2018 with 'java.text.SimpleDateFormat', it print 31/12/2019. It's look like the bug depend on where I reuse a previous initalized variable for 'java.text.SimpleDateFormat'

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a simple Java class 'Bzr' with command line. The display will illustrate the problem.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
31/12/2018
07/01/2019
07/01/2019
31/12/2018
ACTUAL -
31/12/2018
07/01/2019
07/01/2019
31/12/2019

---------- BEGIN SOURCE ----------
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

public class Bzr {

public static void main(String[] args) throws ParseException {

String dateString = "31/12/2018";
String dateString2 = "07/01/2019";
SimpleDateFormat formatter = new SimpleDateFormat("dd/MM/yyyy");
Date date = formatter.parse(dateString);
Date date2 = formatter.parse(dateString2);

//Work
System.out.println(formatter.format(date));
System.out.println(formatter.format(date2));
System.out.println(new SimpleDateFormat("dd/MM/YYYY").format(date2));

//Don't work
System.out.println(new SimpleDateFormat("dd/MM/YYYY").format(date));
}
}
---------- END SOURCE ----------

FREQUENCY : always