java 현재시간 출력 ( Calendar, SimpleDateFormat )

java 현재 시간 출력

import java.text.SimpleDateFormat;
import java.util.Calendar;
 
public class Example {
    public static void main(String[] args) {
        
        Calendar cal = Calendar.getInstance();
        
        System.out.println(cal.get(Calendar.YEAR ));
        System.out.println(cal.get(Calendar.MONTH ));
        System.out.println(cal.get(Calendar.DATE ));
        System.out.println(cal.get(Calendar.AM_PM ));
        System.out.println(cal.get(Calendar.HOUR ));
        System.out.println(cal.get(Calendar.MINUTE ));
        System.out.println(cal.get(Calendar.SECOND));
        System.out.println(cal.get(Calendar.MILLISECOND));
        
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd aa hh:mm:ss");
        
        System.out.println(sdf);    //java.text.SimpleDateFormat@a8f2fd60
        System.out.println(sdf.format(cal.getTime()));    // 2019-10-04 오전 10:13:06
        
    }    
}