Calendar时间比较

package com.feng.test;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class CalendarTest {
	public static void main(String[] args) {
		Calendar c1 = Calendar.getInstance();
		Calendar c2 = Calendar.getInstance();
		DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
		try {
			c2.setTime(dateFormat.parse("2016-11-24"));
			c2.add(Calendar.DATE, -15);
			c1.setTime(dateFormat.parse(dateFormat.format(new Date())));
		} catch (ParseException e) {
			e.printStackTrace();
		}

		int result = c1.compareTo(c2);
		if (result <= 0)
		{
			System.out.println("yes");
		}
	}
}