时间类型比较

 

public static void main(String args[]){
	SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
	Calendar c1=Calendar.getInstance();
	Calendar c2=Calendar.getInstance();
	try {
		c1.setTime(formatter.parse("2009-10-24 12:55:55"));
		c2.setTime(formatter.parse("2009-10-25 12:55:55"));
	} catch (ParseException e) {
		e.printStackTrace();
	}
	// -1表示c1小于c2
	int result=c1.compareTo(c2);
	System.out.println(result);
	}