com.taobao.tddl.sample.util.DateUtil.java Source code

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Here is the source code for com.taobao.tddl.sample.util.DateUtil.java

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/*(C) 2007-2012 Alibaba Group Holding Limited.   
 *This program is free software; you can redistribute it and/or modify   
*it under the terms of the GNU General Public License version 2 as   
* published by the Free Software Foundation.   
* Authors:   
*   junyu <junyu@taobao.com> , shenxun <shenxun@taobao.com>,   
*   linxuan <linxuan@taobao.com> ,qihao <qihao@taobao.com>    
*/
package com.taobao.tddl.sample.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Collections;
import java.util.Date;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Comment for DateUtil
 * <p/>
 * Author By: zhuoxue.yll
 * Created Date: 2012-2-29 02:26:02 
 */
public class DateUtil {

    /** yyyy-MM-dd */
    public static final String DATE_FULLHYPHEN = "yyyy-MM-dd";

    /**
     * 
     *
     * @param date
     * @param pattern
     * @return
     */
    public static String formatDate(Date date, String pattern) {
        if (date == null) {
            return null;
        }
        if (StringUtils.isBlank(pattern)) {
            return null;
        }
        SimpleDateFormat fmt = new SimpleDateFormat(pattern);
        String convStr = fmt.format(date);
        return convStr;
    }

    /**
     * /
     *
     * @param intervals
     * @param format
     * @return
     */
    public static String getDiffDate(int intervals, String format) {
        Calendar cal = Calendar.getInstance();
        cal.add(Calendar.DATE, intervals);
        Date intervalDay = cal.getTime();
        return formatDate(intervalDay, format);
    }

}