Get date by year, month, day. - Android java.util

Android examples for java.util:Month

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Description

Get date by year, month, day.

Demo Code

/*//from  ww w . j  a va  2 s  .  c  o  m
 * Copyright (C) 2016 venshine.cn@gmail.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.
 */
//package com.java2s;

import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;

public class Main {
    public static final String DATE_FORMAT = "yyyyMMdd";

    /**
     * Get date by year, month, day.
     *
     * @param year
     * @param month
     * @param day
     * @return
     */
    public static String getDate(int year, int month, int day) {
        return "" + year + (month > 9 ? month : ("0" + month))
                + (day > 9 ? day : ("0" + day));
    }

    /**
     * Get date by time
     *
     * @param time
     * @return
     */
    public static String getDate(long time) {
        SimpleDateFormat df = new SimpleDateFormat(DATE_FORMAT);
        Date now = new Date(time);
        return df.format(now);
    }

    /**
     * Get date by year, month
     *
     * @param year
     * @param month
     * @return
     */
    public static String getDate(int year, int month) {
        String datetime = "" + year + (month > 9 ? month : ("0" + month));
        String parrern = "yyyyMM";
        SimpleDateFormat df = new SimpleDateFormat(parrern);
        try {
            Date date = df.parse(datetime);
            SimpleDateFormat df2 = new SimpleDateFormat(DATE_FORMAT);
            return df2.format(date);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        return "";
    }
}

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