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("d", nowtime.get(Calendar.YEAR))+"/"+                  String.format("d", nowtime.get(Calendar.MONTH))+"/" +                  String.format("d", nowtime.get(Calendar.DATE))+" " +                  String.format("d", nowtime.get(Calendar.HOUR))+":" +                  String.format("d", nowtime.get(Calendar.MINUTE))+":" +                  String.format("d", nowtime.get(Calendar.SECOND))+"." +                  String.format("d", 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);      }  }   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("d", nowtime.get(Calendar.YEAR))+"/"+ String.format("d", nowtime.get(Calendar.MONTH))+"/" + String.format("d", nowtime.get(Calendar.DATE))+" " + String.format("d", nowtime.get(Calendar.HOUR))+":" + String.format("d", nowtime.get(Calendar.MINUTE))+":" + String.format("d", nowtime.get(Calendar.SECOND))+"." + String.format("d", 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]