Java Date Now currentSystemDate()

Description

current System Date

License

Apache License

Declaration

public static long currentSystemDate() 

Method Source Code

//package com.java2s;
/*******************************************************************************
 * Copyright 2012 Jack Wang/*from  w  w w . j  a  v  a2  s  .c  o m*/
 * 
 * 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.util.Calendar;

import java.util.TimeZone;

public class Main {
    public final static TimeZone GMT = TimeZone.getTimeZone("GMT");
    public static long CurrentSystemDate = Long.MAX_VALUE;

    public static long currentSystemDate() {
        if (CurrentSystemDate - System.currentTimeMillis() > 120000) {
            Calendar calendar = Calendar.getInstance(GMT);
            calendar.set(Calendar.HOUR_OF_DAY, 0);
            calendar.set(Calendar.MINUTE, 0);
            calendar.set(Calendar.SECOND, 0);
            calendar.set(Calendar.MILLISECOND, 0);
            CurrentSystemDate = calendar.getTimeInMillis();
        }
        return CurrentSystemDate;
    }
}

Related

1. currentDateString()
2. currentDateTime(long time, int type)
3. currentDateTimeMillis()
4. currentDateTimeToEasySortedDateTime()
5. currentGMTDateTime()
6. currentXdsDate(int format)
7. getCurrent()
8. getCurrent()
9. getCurrentAccurateDateTimeStringForPrint()