Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*
 * Copyright (C) 2015 iChano incorporation's Open Source Project
 *
 * 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.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.GregorianCalendar;

public class Main {

    public static Date calculateByDate(Date d, int amount) {
        return calculate(d, GregorianCalendar.DATE, amount);
    }

    public static String calculateByDate(String date, String format, int dayOffset) {

        SimpleDateFormat formater = new SimpleDateFormat();
        try {
            formater.applyPattern(format);
            Date time = formater.parse(date);
            long ts = time.getTime() + dayOffset * 24 * 3600 * 1000L;
            Date newDate = new Date(ts);
            return date2String(format, newDate);
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
    }

    private static Date calculate(Date d, int field, int amount) {
        if (d == null)
            return null;
        GregorianCalendar g = new GregorianCalendar();
        g.setGregorianChange(d);
        g.add(field, amount);
        return g.getTime();
    }

    public static String getTime() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmss");
        String str = "";
        try {
            str = sdf.format(System.currentTimeMillis());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return str;
    }

    public static String date2String(String formater, Date aDate) {
        if (formater == null || "".equals(formater))
            return null;
        if (aDate == null)
            return null;
        return (new SimpleDateFormat(formater)).format(aDate);
    }

    public static String date2String(String formater) {
        return date2String(formater, new Date());
    }
}