java.util.Calendar WTF

WTF.java

import java.util.Calendar;
import java.util.TimeZone;

public class WTF {
    public static void main(String... args) {
        Calendar constructorTimezone = Calendar.getInstance(TimeZone.getTimeZone("GMT+12:00"));
        constructorTimezone.set(2000, Calendar.JANUARY, 1);

        Calendar setterTimezone = Calendar.getInstance();
        setterTimezone.setTimeZone(TimeZone.getTimeZone("GMT+12:00"));
        setterTimezone.set(2000, Calendar.JANUARY, 1);

        System.out.println(constructorTimezone.getTime());
        System.out.println(setterTimezone.getTime());
    
    }
}