[JavaScript] Date to String

function convertDateToYear(date){
    return date.getFullYear();
}

function convertDateToMonth(date){

    return date.getMonth() + 1;

}

function convertDateToDay(date){

    return date.getDate();

}

[Java] Date to String

public static String convertDateToString(Date date) {
if(date == null) return null;
SimpleDateFormat formatter = new SimpleDateFormat("yyyy년 M월 d일, h시 m분 s초");
return formatter.format(date);
}

public static String convertDateToYear(Date date) {
if(date == null) return null;
SimpleDateFormat formatter = new SimpleDateFormat("yyyy");
return formatter.format(date);
}

public static String convertDateToMonth(Date date) {
if(date == null) return null;
SimpleDateFormat formatter = new SimpleDateFormat("MM");
return formatter.format(date);
}


public static String convertDateToDay(Date date) {
if(date == null) return null;
SimpleDateFormat formatter = new SimpleDateFormat("dd");
return formatter.format(date);
}