日期格式的月和日固定长度？ [英] Fixed length of month and day in date format?

问题描述

有没有办法将Date对象格式化为固定长度的日期和月份，以便在列中具有良好的对齐方式？
例如：

Is there any way to format Date object to made fixed length of Day and Month in order to have good alignment in a column? For example:

15 May      2010
10 January  2010

而不是

15 May 2010
10 January 2010

谢谢！

推荐答案

一个格式方法与String相同的href =http://download.oracle.com/javase/6/docs/api/java/util/Formatter.html> java.util.Formatter 类。 format（...）和类似于System.out.printf。

Have a look at the java.util.Formatter class whose format method is the same as String.format(...) and similar to System.out.printf.

例如：

import java.util.Calendar;
import java.util.Date;
import java.util.GregorianCalendar;

public class FormatDateCalendar {
   public static final String FORMAT_STRING = "%1$-3td %1$-9tB %1$tY";
   public static void main(String[] args) {
      Calendar c1 = new GregorianCalendar(2011, Calendar.FEBRUARY, 3);
      Calendar c2 = new GregorianCalendar(2010, Calendar.MAY, 15);
      Date today = new Date();

      System.out.printf(FORMAT_STRING + "%n", c1);
      System.out.printf(FORMAT_STRING + "%n", c2);
      System.out.printf(FORMAT_STRING + "%n", today);
   }
}

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