Java获取当前时间的年月日方法

package com.ob;



import java.text.ParseException;

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;



public class DateTest {



    public static void main(String[] args) throws ParseException {

        Calendar now = Calendar.getInstance();

        System.out.println("年: " + now.get(Calendar.YEAR));

        System.out.println("月: " + (now.get(Calendar.MONTH) + 1) + "");

        System.out.println("日: " + now.get(Calendar.DAY_OF_MONTH));

        System.out.println("时: " + now.get(Calendar.HOUR_OF_DAY));

        System.out.println("分: " + now.get(Calendar.MINUTE));

        System.out.println("秒: " + now.get(Calendar.SECOND));

        System.out.println("当前时间毫秒数：" + now.getTimeInMillis());

        System.out.println(now.getTime());



        Date d = new Date();

        System.out.println(d);

        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

        String dateNowStr = sdf.format(d);

        System.out.println("格式化后的日期：" + dateNowStr);

        

        String str = "2012-1-13 17:26:33";    //要跟上面sdf定义的格式一样

        Date today = sdf.parse(str);

        System.out.println("字符串转成日期：" + today);

    }

}