学步园

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;


public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
		Date date1;
		Date date2;
		try {
			date1 = sdf.parse("2007-11-26");
			date2 = sdf.parse("2013-02-14");
			System.out.println(new Test().dateDiff(date1,date2));
		} catch (ParseException e1) {
			// TODO Auto-generated catch block
			e1.printStackTrace();
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

	public static long dateDiff(Date d1, Date d2) throws Exception {
		long n1 = d1.getTime();
		long n2 = d2.getTime();
		long diff = Math.abs(n1 - n2);
		diff /= 3600 * 1000 * 24;
		return diff;
	}
}