Java LocalDate Calculate adjustDate(final LocalDate contextDate, String str, final boolean add)

Description

adjust Date

License

Apache License

Declaration

private static LocalDate adjustDate(final LocalDate contextDate, String str, final boolean add) 

Method Source Code

//package com.java2s;
/*/*  www  .j av a 2 s  . c  o  m*/
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you 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.LocalDate;

public class Main {
    private static LocalDate adjustDate(final LocalDate contextDate, String str, final boolean add) {
        int hours = 0;
        int minutes = 0;
        int days = 0;
        int months = 0;
        int years = 0;

        if (str.endsWith("H")) {
            str = str.substring(0, str.length() - 1);
            hours = Integer.valueOf(str).intValue();
        } else if (str.endsWith("M")) {
            str = str.substring(0, str.length() - 1);
            minutes = Integer.valueOf(str).intValue();
        } else if (str.endsWith("w")) {
            str = str.substring(0, str.length() - 1);
            days = 7 * Integer.valueOf(str).intValue();
        } else if (str.endsWith("y")) {
            str = str.substring(0, str.length() - 1);
            years = Integer.valueOf(str).intValue();
        } else if (str.endsWith("m")) {
            str = str.substring(0, str.length() - 1);
            months = Integer.valueOf(str).intValue();
        } else if (str.endsWith("d")) {
            str = str.substring(0, str.length() - 1);
            days = Integer.valueOf(str).intValue();
        } else {
            days = Integer.valueOf(str).intValue();
        }

        if (add) {
            return add(contextDate, years, months, days, hours, minutes);
        } else {
            return add(contextDate, -years, -months, -days, -hours, -minutes);
        }
    }

    private static LocalDate add(final LocalDate original, final int years, final int months, final int days,
            final int hours, final int minutes) {
        if (hours != 0 || minutes != 0) {
            throw new IllegalArgumentException("cannot add non-zero hours or minutes to a LocalDate");
        }
        return original.plusYears(years).plusMonths(months).plusDays(days);
    }
}

Related

1. asDate(LocalDate date)
2. asEpochMilli(final LocalDate localDate)
3. atEndOfDay(LocalDate date)
4. before(final LocalDate d1, final LocalDate d2)