tooldate.java

实现统一的人员日志管理系统管理后台

package com.tb.log.util.tools;

import java.util.Calendar;
import java.util.Date;
import java.text.*;

public class ToolDate {
	

	/**
	 * @param year
	 * @param month
	 * @param day
	 * @return date   (将字符串组串后返回日期类型字符串)
	 */
	public static String StringToDate(String year,String month,String day){
		
		month = addString(month);
		day = addString(day);
		String date = "";
		if(year != null){
			date = year+"-"+month+"-"+day;
			//System.out.println(date);
		}
		return date;
	}
	public static  String addString(String str){
		
		if(str == null || str.equals("") ){
			str ="";
		}else{
			if(str.length()==1){
				str = "0"+str;
			}
		}
		return str;
	}
	
	/**
	 * @return  now;
	 *  获取系统当前时间，并组成字符串
	 */
	public static String GetNowDate(){
		Date date = new Date();
		String now = (date.getYear()+1900)+"-"+(date.getMonth()+1)+"-"+date.getDate();
		return now;
	}
	
	public static String getNow()
	{
		java.text.DateFormat dateformat=new SimpleDateFormat("yyyy-MM-dd");
		java.util.Calendar calender=Calendar.getInstance();
		return dateformat.format(calender.getTime());
	}
	public static void main(String[] args) {
		//new ToolDate().StringToDate("1920", "4", "09");
		//System.out.println(ToolDate.GetNowDate());;
		System.out.println(ToolDate.StringToDate("2009", "1", "1"));
	}
}