Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import java.text.ParseException;
import java.text.SimpleDateFormat;

import java.util.Date;

public class Main {

    public static long getTodayStartMillis() {
        //        String dateStr = millisToStringDate(System.currentTimeMillis(), "yyyy-MM-dd");
        //        return string2Millis(dateStr, "yyyy-MM-dd");
        return getOneDayStartMillis(System.currentTimeMillis());
    }

    public static long getOneDayStartMillis(long millis) {
        String dateStr = millisToStringDate(millis, "yyyy-MM-dd");
        return string2Millis(dateStr, "yyyy-MM-dd");
    }

    public static String millisToStringDate(long millis) {
        return millisToStringDate(millis, "yyyy-MM-dd HH:mm:ss");
    }

    public static String millisToStringDate(long millis, String pattern) {
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        return format.format(new Date(millis));

    }

    public static long string2Millis(String str, String pattern) {
        SimpleDateFormat format = new SimpleDateFormat(pattern);
        long millis = 0;
        try {
            millis = format.parse(str).getTime();
        } catch (ParseException e) {
        }
        return millis;
    }
}