dateformatutilstest.java

很不错的结合DateTime的综合例子

/**
 * 时间及时间格式处理测试
 * */

package com.lianjiping.democ;

import java.util.Calendar;
import java.util.Date;
import java.util.Locale;

public class DateFormatUtilsTest {
    public static void main(String[] args) {
        long currentTimeMillis = DateFormatUtils.getCurrentTimeMillis();
        System.out.println("系统的当前时间(毫秒): " + currentTimeMillis);

        Date currentDate = DateFormatUtils.getCurrentDate();
        System.out.println("系统的当前时间: " + currentDate);

        String currentFormatDate = DateFormatUtils.getCurrentFormatDate();
        System.out.println("系统的当前日期(默认格式): " + currentFormatDate);

        String currentFormatDateTime = DateFormatUtils.getCurrentFormatDateTime();
        System.out.println("系统的当前日期时间(默认格式): " + currentFormatDateTime);

        String currentCustomFomatDateTime12 = DateFormatUtils.
                                              getCurrentCustomFormatDateTime("yyyy-MM-dd HH:mm ");
        System.out.println("系统的当前日期时间(指定格式返回): " + currentCustomFomatDateTime12);

        String formatDate = DateFormatUtils.formatDate(currentDate, "yyMM");
        System.out.println("输入日期(指定格式返回): " + formatDate);

        String formatDate1 = DateFormatUtils.formatDate(currentDate,
                "yyyyMMdd ", new Locale("zh", "CN", ""));
        System.out.println("输入日期(指定格式返回): " + formatDate1);

        Date strToDate = DateFormatUtils.parseStrToDate(currentFormatDateTime);
        System.out.println("按照默认格式转换为Date: " + strToDate);

        Date strToDateTime = DateFormatUtils.parseStrToDateTime(
                currentFormatDateTime);
        System.out.println("按照默认格式转换为Date: " + strToDateTime);

        Calendar cal = DateFormatUtils.parseStrToCalendar(currentFormatDateTime);
        System.out.println("按照默认格式转换为Calender: " +
                           cal.get(Calendar.YEAR) + "年" +
                           cal.get(Calendar.MONTH) + "月" +
                           cal.get(Calendar.DAY_OF_MONTH) + "日" +
                           cal.get(Calendar.HOUR_OF_DAY) + ":" +
                           cal.get(Calendar.MINUTE) + ":" +
                           cal.get(Calendar.SECOND));

        String dateTimeStr = DateFormatUtils.parseDateStrToDateTimeStr(
                currentFormatDate);
        System.out.println("日期字符串转换成日期时间字符串: " + currentFormatDate +
                           " = " + dateTimeStr);

        Date strToFormatDate = DateFormatUtils.parseStrToCustomPatternDate(
                currentFormatDateTime, DateFormatUtils.DATE_TIME_FORMAT);
        Date strToFormatDateTime = DateFormatUtils.parseStrToCustomPatternDate(
                currentFormatDateTime, "");
        System.out.println("Test 12: Parse String To \n" +
                           " \t\tcustom pattern Date: " + strToFormatDate +
                           " \n " +
                           " \t\tcustom pattern Date without pattern: " +
                           strToFormatDateTime);
        System.out.println("Test 13: " + DateFormatUtils.formatDate(strToFormatDateTime,
                DateFormatUtils.DATE_TIME_FORMAT));

        String convertPattern = DateFormatUtils.convertDatePattern(
                currentFormatDateTime, DateFormatUtils.DATE_TIME_FORMAT,
                DateFormatUtils.DATE_TIME_FORMAT_14);
        System.out.println("Test 14: Pattern From: " +
                           currentFormatDateTime +
                           " \n\t\tpattern to: " + convertPattern);

        Date addDays = DateFormatUtils.addDays(strToDate, 35);
        System.out.println("Test 15: " + strToDate +
                           ", After Add 30 Days, \n\t The Time Is: " +
                           addDays);
        Date minusDays = DateFormatUtils.minusDays(addDays, 35);
        System.out.println("Test 16: " + addDays +
                           ", After Minus 30 Days, \n\t The Time Is: " +
                           minusDays);

        String addYear = DateFormatUtils.addDate(currentFormatDateTime,
                                                 DateFormatUtils.
                                                 DATE_TIME_FORMAT, "year", 2);
        String addMonth = DateFormatUtils.addDate(currentFormatDateTime,
                                                  DateFormatUtils.
                                                  DATE_TIME_FORMAT, "month",
                                                  2);
        String addDay = DateFormatUtils.addDate(currentFormatDateTime,
                                                DateFormatUtils.
                                                DATE_TIME_FORMAT, "day", 2);
        String addHour = DateFormatUtils.addDate(currentFormatDateTime,
                                                 DateFormatUtils.
                                                 DATE_TIME_FORMAT, "hour", 2);
        String addMinute = DateFormatUtils.addDate(currentFormatDateTime,
                DateFormatUtils.DATE_TIME_FORMAT, "minute", 2);
        String minusWeek = DateFormatUtils.minusDate(currentFormatDateTime,
                DateFormatUtils.DATE_TIME_FORMAT, "week", 2);
        String minusSecond = DateFormatUtils.minusDate(currentFormatDateTime,
                DateFormatUtils.DATE_TIME_FORMAT, "second", 2);
        System.out.println("按时间格式相减: " + currentFormatDateTime +
                           " \n\t Add 2 Years: " + addYear +
                           " \n\t Add 2 Month: " + addMonth +
                           " \n\t Add 2 Days: " + addDay +
                           " \n\t Add 2 Hours: " + addHour +
                           " \n\t Add 2 Minutes: " + addMinute +
                           " \n\t Minus 2 Eeeks: " + minusWeek +
                           " \n\t Minus 2 Deconds: " + minusSecond);

        System.out.println("日期大小比较: " +
                           " \n\t AddMonth Compare To AddYear: " +
                           DateFormatUtils.compareDate(addMonth, addYear,
                DateFormatUtils.DATE_TIME_FORMAT) +
                           " \n\t AddMonth Compare To AddDay: " +
                           DateFormatUtils.compareDate(addMonth, addDay,
                DateFormatUtils.DATE_TIME_FORMAT) +
                           " \n\t AddMonth Compare To AddMonth: " +
                           DateFormatUtils.compareDate(addMonth, addMonth,
                DateFormatUtils.DATE_TIME_FORMAT));

        String firstDayInMonth = DateFormatUtils.getFirstDayInMonth(
                currentFormatDateTime);
        System.out.println("本月的第一天: " + firstDayInMonth);

        String lastDayInMonth = DateFormatUtils.getLastDayInMonth(
                currentFormatDateTime);
        System.out.println("本月的最后一天: " + lastDayInMonth);

        String firstDayInWeek = DateFormatUtils.getFirstDayInWeek(
                currentFormatDateTime);
        System.out.println("本周的第一天: " + firstDayInWeek);

        String lastDayInWeek = DateFormatUtils.getLastDayInWeek(
                currentFormatDateTime);
        System.out.println("本周的最后一天: " + lastDayInWeek);
    }
}