Here you can find the source of isWorkDay(@Nonnull final LocalDate aDate)
public static boolean isWorkDay(@Nonnull final LocalDate aDate)
//package com.java2s; /**// www.j a v a2s .co m * Copyright (C) 2014-2017 Philip Helger (www.helger.com) * philip[at]helger[dot]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.DayOfWeek; import java.time.LocalDate; import java.time.LocalDateTime; import javax.annotation.Nonnull; public class Main { public static boolean isWorkDay(@Nonnull final LocalDate aDate) { return !isWeekend(aDate); } public static boolean isWeekend(@Nonnull final LocalDateTime aDT) { return isWeekendDay(aDT.getDayOfWeek()); } public static boolean isWeekend(@Nonnull final LocalDate aDT) { return isWeekendDay(aDT.getDayOfWeek()); } public static boolean isWeekendDay(final DayOfWeek nDayOfWeek) { return nDayOfWeek == DayOfWeek.SATURDAY || nDayOfWeek == DayOfWeek.SUNDAY; } }