Here you can find the source of toDate(Optional
public static Date toDate(Optional<ZonedDateTime> date)
//package com.java2s; /**/*from w ww.jav a 2s. co m*/ * Copyright (C) 2015 BCC Risk Advisory (info@bccriskadvisory.com) * * 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.time.ZonedDateTime; import java.util.Date; import java.util.Optional; public class Main { public static Date toDate(Optional<ZonedDateTime> date) { if (date.isPresent()) { return Date.from(date.get().toInstant()); } else { return null; } } }