calendardemo.java

jbuilder2006一书的所有源代码

package date;

import java.util.Calendar;

public class CalendarDemo {

  public static void main(String[] args) {
    //创建Calendar类
    Calendar calendar1 = Calendar.getInstance();
    System.out.println("calendar1.YEAR = " + calendar1.get(calendar1.YEAR));
    //Calendar类的月份从0开始
    System.out.println("calendar1.MONTH = " +
                       (calendar1.get(calendar1.MONTH) + 1));
    System.out.println("calendar1.DATE = " + calendar1.get(calendar1.DATE));
    System.out.println("calendar1.HOUR = " + calendar1.get(calendar1.HOUR));
    System.out.println("calendar1.MINUTE = " + calendar1.get(calendar1.MINUTE));
    System.out.println("calendar1.SECOND = " + calendar1.get(calendar1.SECOND));
    System.out.println("calendar1.MILLISECOND = " +
                       calendar1.get(calendar1.MILLISECOND));
    //显示日期
    System.out.println("calendar1.getTime() = " + calendar1.getTime());
    //设置Calendar类的年、月、日、时、分、秒
    calendar1.set(2004, 8, 12, 18, 32, 21);
    System.out.println("calendar1.set(2004, 8, 12, 18, 32, 21)");
    System.out.println("calendar1.getTime() = " + calendar1.getTime());
    //增加Calendar类的天数
    calendar1.add(calendar1.DATE, 3);
    System.out.println("calendar1.add(calendar1.DATE, 3)");
    System.out.println("calendar1.getTime() = " + calendar1.getTime());
    //增加1年
    calendar1.roll(calendar1.YEAR, true);
    System.out.println("calendar1.roll(calendar1.YEAR, true)");
    System.out.println("calendar1.getTime() = " + calendar1.getTime());
  }
}