java.util.Calendar

java.util.Calendar 类是java自带的日期类

 

public class Test {

	public static void main(String[] args) throws Exception{
		SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd HH");
		Calendar calendar = Calendar.getInstance();
		calendar.setTime(format.parse("2011-6-23 10"));
		
		System.out.println(format.format(calendar.getTime()));
		calendar.add(Calendar.MONTH, 3);//在原来的日期上添3个月
		calendar.add(Calendar.DAY_OF_YEAR, 8);//在原来的日期上添8天
		calendar.add(Calendar.HOUR_OF_DAY, 15);//在原来的日期上天15个小时
		System.out.println(format.format(calendar.getTime()));
		
		Calendar calendar1 = Calendar.getInstance();
		calendar1.setTime(format.parse("2011-6-24 10"));
		while(calendar.before(calendar1)){
			System.out.println("====calendar:"+format.format(calendar.getTime()));
			calendar.add(Calendar.HOUR_OF_DAY, 1);
		}
	}
}