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Cattle framework utils component pom
There is a newer version: 1.0.1-M3
/*
 * Copyright (C) 2018 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.cattleframework.utils.auxiliary;

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

import org.cattleframework.exception.CattleException;

/**
 * 日期工具
 * 
 * @author orange
 *
 */
public final class DateUtils {

    private DateUtils() {
    }

    public static int getYear(Date date) {
	if (date == null) {
	    return 0;
	}
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(date);
	return calendar.get(Calendar.YEAR);
    }

    public static Date getDate(int year, int month, int day) {
	return getDate(year, month, day, 0, 0, 0, 0);
    }

    public static Date getDate(int year, int month, int day, int hour, int minute, int second) {
	return getDate(year, month, day, hour, minute, second, 0);
    }

    public static Date getDate(int year, int month, int day, int hour, int minute, int second, int millisecond) {
	int calendarMonth;
	switch (month) {
	case 1:
	    calendarMonth = Calendar.JANUARY;
	    break;
	case 2:
	    calendarMonth = Calendar.FEBRUARY;
	    break;
	case 3:
	    calendarMonth = Calendar.MARCH;
	    break;
	case 4:
	    calendarMonth = Calendar.APRIL;
	    break;
	case 5:
	    calendarMonth = Calendar.MAY;
	    break;
	case 6:
	    calendarMonth = Calendar.JUNE;
	    break;
	case 7:
	    calendarMonth = Calendar.JULY;
	    break;
	case 8:
	    calendarMonth = Calendar.AUGUST;
	    break;
	case 9:
	    calendarMonth = Calendar.SEPTEMBER;
	    break;
	case 10:
	    calendarMonth = Calendar.OCTOBER;
	    break;
	case 11:
	    calendarMonth = Calendar.NOVEMBER;
	    break;
	case 12:
	    calendarMonth = Calendar.DECEMBER;
	    break;
	default:
	    throw new CattleException("无效的月份:" + month);
	}
	Calendar calendar = Calendar.getInstance();
	calendar.set(Calendar.YEAR, year);
	calendar.set(Calendar.MONTH, calendarMonth);
	calendar.set(Calendar.DAY_OF_MONTH, day);
	calendar.set(Calendar.HOUR_OF_DAY, hour);
	calendar.set(Calendar.MINUTE, minute);
	calendar.set(Calendar.SECOND, second);
	calendar.set(Calendar.MILLISECOND, millisecond);
	return calendar.getTime();
    }

    public static Date getNextDate(Date date) {
	if (date == null) {
	    return null;
	}
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(date);
	calendar.add(Calendar.DAY_OF_MONTH, 1);
	return calendar.getTime();
    }

    public static Date getNextWeekDate(Date date) {
	if (date == null) {
	    return null;
	}
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(date);
	calendar.add(Calendar.DAY_OF_MONTH, 7);
	return calendar.getTime();
    }

    public static Date getNextMonthDate(Date date) {
	if (date == null) {
	    return null;
	}
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(date);
	calendar.add(Calendar.MONTH, 1);
	return calendar.getTime();
    }

    public static Date getNextYearDate(Date date) {
	if (date == null) {
	    return null;
	}
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(date);
	calendar.add(Calendar.YEAR, 1);
	return calendar.getTime();
    }

    public static int getMonthDays(int year, int month) {
	Calendar calendar = Calendar.getInstance();
	calendar.setTime(getDate(year, month, 1));
	return calendar.getActualMaximum(Calendar.DAY_OF_MONTH);
    }
}