/**
 * 日期時間比較
 * */

package com.lianjiping.demoa;

import java.text.*;
import java.util.*;

public class DateE {
    public static void main(String[] args) {
        boolean flag = isDateBefore("2006-09-09 12:12:12",
                                    "2005-09-09 16:00:00");
        System.out.println(flag);
        flag = isDateBefore("2006-09-09 01:01:01", "2005-09-09 16:00:00");
        System.out.println(flag);
        flag = isDateBefore("2005-09-09 01:01:01");
        System.out.println(flag);
    }

    //判斷時間date1是否在時間date2之前
    //時間格式: 2005-4-21 16:16:34
    public static boolean isDateBefore(String date1, String date2) {
        try {
            DateFormat df = DateFormat.getDateTimeInstance();
            return df.parse(date1).before(df.parse(date2));
        } catch (ParseException e) {
            System.out.print("SYS: " + e.getMessage());
            return false;
        }
    }

    //判斷當前時間是否在時間date2之前
    //時間格式: 2005-4-21 16:16:34
    public static boolean isDateBefore(String date2) {
        try {
            Date date1 = new Date();
            DateFormat df = DateFormat.getDateTimeInstance();
            return date1.before(df.parse(date2));
        } catch (ParseException e) {
            System.out.print("SYS: " + e.getMessage());
            return false;
        }
    }
}