오늘 날짜 출력 (yyyyMMdd)

import java.text.SimpleDateFormat;
import java.util.Calendar;
 
public class test {
    public static void main(String[] args) {
        
        SimpleDateFormat fm = new SimpleDateFormat("yyyyMMdd");
        Calendar cal = Calendar.getInstance();
        System.out.println(fm.format(cal.getTime()));
    }
}

결과 : 20190114