java比较两个日期大小

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

/**
*
* @author hp
*/
public class test {

    public static void main(String args[]) {
       int i= compare_date("1995-11-12 15:21", "1999-12-11 09:59");
       System.out.println("i=="+i);
    }

    public static int compare_date(String DATE1, String DATE2) {
       
       
        DateFormat df = new SimpleDateFormat("yyyy-MM-dd hh:mm");
        try {
            Date dt1 = df.parse(DATE1);
            Date dt2 = df.parse(DATE2);
            if (dt1.getTime() > dt2.getTime()) {
                System.out.println("dt1 在dt2前");
                return 1;
            } else if (dt1.getTime() < dt2.getTime()) {
                System.out.println("dt1在dt2后");
                return -1;
            } else {
                return 0;
            }
        } catch (Exception exception) {
            exception.printStackTrace();
        }
        return 0;
    }
}