Here you can find the source of transform(Calendar cal)
public static Date transform(Calendar cal)
//package com.java2s; /******************************************************************************* * Copyright (c) 2004 - 2006 Mylar committers and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html *******************************************************************************/ import java.util.*; public class Main { public static Date transform(Calendar cal) { return cal.getTime(); }/*from w w w .j a v a 2 s .c o m*/ public static Calendar transform(Date date) { Calendar cal = Calendar.getInstance(); cal.setTime(date); return cal; } }