java.time 패키지를 이용하여 달력 만들기

package hello;
import java.time.*;
public class time_package {

 public static void main(String[] args) {

  LocalDateTime dateTime = LocalDateTime.of(2015,12,31,12,34,56);
  System.out.print(dateTime);
 }

}

 

출력결과 : 2015-12-31T12:34:56

 

 

package hello;
import java.util.*;

public class calendar {

 public static void main(String[] args) {
  Calendar cal = Calendar.getInstance();
  
  int year = cal.get(Calendar.YEAR);
  int month = cal.get(Calendar.MONTH) +1;
  //System.out.println("Current time is :" + cal.getTime());
  
  System.out.println("           "+year + "년"+ month + "월");
  System.out.println(" SUN MON THU WEN THR FRI SAT");
  Calendar sDay = Calendar.getInstance();
  Calendar eDay = Calendar.getInstance();
  
  sDay.set(year, month-1,1);
  eDay.set(year, month,1);
  eDay.add(Calendar.DATE, -1);
  
  int START_DAY_OF_WEEK = 0;
  int END_DAY = 0;
  
  START_DAY_OF_WEEK = sDay.get(Calendar.DAY_OF_WEEK);
  END_DAY = eDay.get(Calendar.DATE);
  for (int i = 1; i< START_DAY_OF_WEEK; i++) {
   System.out.print("    ");
  }
  for (int i =1, n = START_DAY_OF_WEEK; i<=END_DAY; i++, n++) {
   System.out.print((i<10)?"   " + i :"  "+ i);
   if(n%7 ==0) System.out.println();
  }
 }
}

 

출력결과 :