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);

}

}

输出结果：

年: 2012

月: 1

日: 13

时: 17

分: 28

秒: 19

当前时间毫秒数：1326446899902

Fri Jan 13 17:28:19 CST 2012

Fri Jan 13 17:28:19 CST 2012

格式化后的日期：2012-01-13 17:28:19

字符串转成日期：Fri Jan 13 17:26:33 CST 2012