Here you can find the source of format6chars(Date date)
public static String format6chars(Date date)
//package com.java2s; //License from project: Apache License import java.text.SimpleDateFormat; import java.util.Date; public class Main { private static final String format6chars = "yyyyMM"; public static String format6chars(Date date) { return format(date, get6charDateFormat()); }//from w ww.j ava2s . c o m /** * Returns a string the represents the passed-in date parsed * according to the passed-in format. Returns an empty string * if the date or the format is null. **/ public static String format(Date aDate, SimpleDateFormat aFormat) { if (aDate == null || aFormat == null) { return ""; } synchronized (aFormat) { return aFormat.format(aDate); } } public static SimpleDateFormat get6charDateFormat() { return new SimpleDateFormat(format6chars); } }