transtool.java

初学着 hibernate 基本应用 基本语法, Hibernate 高级分页技术 以及分页是要注意的地方

package com.accp.util;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.*;

public class TransTool {
    public static Date transStr2Date(String dateStr){
    	if(dateStr == null || dateStr.equals(""))return null;
    	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    	Date date = null;
        try {
			date =  sdf.parse(dateStr);
		} catch (ParseException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
		return date;
    }
    public static String transDate2Str(Date date){
    	if(date == null )return null;
    	SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
    	String dateStr = null;
        dateStr =  sdf.format(date);
		return dateStr;
    }
    public static Date addOneDay(Date date){
    	if(date == null )return null;
    	Calendar c = Calendar.getInstance();
    	c.setTime(date);
    	
    	c.set(Calendar.DATE, c.get(Calendar.DATE)+1);
		return c.getTime();
    }
    
}