Here you can find the source of format(GregorianCalendar calendar)
public static String format(GregorianCalendar calendar)
//package com.java2s; /******************************************************************************* * Copyright (C) 2005-2012 Alfresco Software Limited. * //from w ww . j a v a 2s .c om * This file is part of the Alfresco Mobile SDK. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. ******************************************************************************/ import java.text.SimpleDateFormat; import java.util.Date; import java.util.GregorianCalendar; public class Main { public static String format(GregorianCalendar calendar) { SimpleDateFormat dateFormat = new SimpleDateFormat( "yyyy-MM-dd'T'hh:mm:ss.SSSZ") { private static final long serialVersionUID = 1L; public StringBuffer format(Date date, StringBuffer toAppendTo, java.text.FieldPosition pos) { StringBuffer toFix = super.format(date, toAppendTo, pos); return toFix.insert(toFix.length() - 2, ':'); }; }; return dateFormat.format(calendar.getTime()); } }