java 형변환 String to Date , Date to String

 

문자열을 날짜로 변환

String str_day = "2023-06-30 11:45:00";

SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

Date d_day = fmt.parse(str_day);

 

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날짜를 문자열로 변환

Date d_day = new Date();

SimpleDateFormat fmt = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

String str_day = fmt.format(d_day);