DataFromatTool

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

/**
 * Title: DataFromatTool.java
 * Description: 时间格式化类
 * Copyright: Copyright (c) 2011
 * Company: company
 * 
 * @author channing
 * @date 2011-2-12 下午02:18:28
 * @version 1.0
 */
public class DataFromatTool {
	
	public final static String defaultFormat = "yyyy-MM-dd HH:mm:ss";

	/**
	 * 
	 * Title: getCurrentTime 
	 * Description:当前时间格式化为字符串
	 * 
	 * @param format
	 * @return
	 */
	public static String getCurrentTime(String format) {
		SimpleDateFormat fmt = new SimpleDateFormat((format != null && !""
				.equals(format)) ? format : defaultFormat);
		return fmt.format(Calendar.getInstance().getTime());
	}

	/**
	 * 
	 * Title: getCurrentDate 
	 * Description:当前时间格式化为Date类型
	 * 
	 * @return
	 */
	public static Date getCurrentDate() {
		return Calendar.getInstance().getTime();
	}

	/**
	 * 
	 * Title: getMonthFirstDay
	 * Description: 当月第一天格式化为字符串类型
	 * 
	 * @param format
	 * @return
	 */
	public static String getMonthFirstDay(String format) {
		SimpleDateFormat fmt = new SimpleDateFormat(format);
		Calendar calendar = Calendar.getInstance();
		calendar.set(Calendar.DAY_OF_MONTH, calendar
				.getActualMinimum(Calendar.DAY_OF_MONTH));

		return fmt.format(calendar.getTime());
	}

	/**
	 * 
	 * Title: getCurrentMonthLisatDay
	 * Description: 当月最后一天格式化为字符串类型
	 * 
	 * @param format
	 * @return
	 */

	public static String getCurrentMonthLisatDay(String format) {
		SimpleDateFormat fmt = new SimpleDateFormat((format != null && !""
				.equals(format)) ? format : defaultFormat);

		Calendar cal = Calendar.getInstance();// 获取当前日期
		cal.set(Calendar.DAY_OF_MONTH, 1);// 设置为1号,当前日期既为本月第一天
		cal.add(Calendar.MONTH, 1);// 月增加1天
		cal.add(Calendar.DAY_OF_MONTH, -1);// 日期倒数一日,既得到本月最后一天
		return fmt.format(cal.getTime());
	}

	/**
	 * 
	 * Title: fmtDate
	 * Description: xxDate时间类型用 xxfmt 格式化为字符串类型
	 * 
	 * @param date
	 * @param fmt
	 * @return
	 */
	public static String fmtDate(Date date, String fmt) {
		if (date == null)
			return null;
		SimpleDateFormat sdf = new SimpleDateFormat((fmt != null && !""
				.equals(fmt)) ? fmt : defaultFormat);
		return sdf.format(date);
	}

	/**
	 * 
	 * Title: getTime
	 * Description: XX字符串时间用xxfmt 格式化为Date 
	 * 
	 * @param time
	 * @param fmt
	 * @return
	 */
	public static Date getTime(String time, String fmt) {
		SimpleDateFormat sdf = new SimpleDateFormat((fmt != null && !""
				.equals(fmt)) ? fmt : defaultFormat);
		try {
			return sdf.parse(time);
		} catch (ParseException e) {

			System.out.print("String to Date Error:" + e.getMessage());
			return null;
		}
	}
	 public enum DateFiled{
	        YEAR,
	        MONTH,
	        DATE,
	        HOUR,
	        MINUTE
	    }
	/**
	 * 
	* Title: modifyDate
	* Description: 年、月、日、时、分不同时间段得到Date时间类型
	* @param date
	* @param amount
	* @param filed
	* @return
	 */
	public static Date modifyDate(Date date,int amount,DateFiled filed){
        Calendar c = Calendar.getInstance();
        c.setTime(date);
        if(filed==DateFiled.YEAR){
            c.add(Calendar.YEAR,amount);
        }else if(filed==DateFiled.MONTH){
            c.add(Calendar.MONTH,amount);
        }else if(filed==DateFiled.DATE){
            c.add(Calendar.DAY_OF_MONTH,amount);
        }else if(filed==DateFiled.HOUR){
            c.add(Calendar.HOUR,amount);
        }else if(filed==DateFiled.MINUTE){
            c.add(Calendar.MINUTE,amount);
        }
        return c.getTime();
    }
	
    /**
     *  
     * Title: getBussinessNoByDate
     * Description: 
     * @return
     */
    public static String getBussinessNoByDate(){
        SimpleDateFormat sdf = new SimpleDateFormat("yyMMddHHmmssSS");
        return sdf.format(getCurrentDate());
    }

}