Java输出当前的日期（年月日时分秒毫秒）

package test.remote.tools.combine;



import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.Date;

import java.util.GregorianCalendar;



public class TestOutDate 

{

	public static void main(String[] args)

	{

		//method 1

		Calendar nowtime = new GregorianCalendar();

		String strDateTime="["+String.format("%04d", nowtime.get(Calendar.YEAR))+"/"+

				String.format("%02d", nowtime.get(Calendar.MONTH))+"/" +

				String.format("%02d", nowtime.get(Calendar.DATE))+" " +

				String.format("%02d", nowtime.get(Calendar.HOUR))+":" +

				String.format("%02d", nowtime.get(Calendar.MINUTE))+":" +

				String.format("%02d", nowtime.get(Calendar.SECOND))+"." +

				String.format("%03d", nowtime.get(Calendar.MILLISECOND))+"]";

		System.out.println(strDateTime);

		

		//method 2

		String msg="";

		Date date = new Date();

		SimpleDateFormat sdf = new SimpleDateFormat("YYYY/MM/dd HH:mm:ss.SSS");

		msg+="["+sdf.format(date)+"]";

		

		System.out.println(msg);

	}

}

运行结果：
[2013/08/09 05:54:32.578]
[2013/09/09 17:54:32.625]