package com.yl.demo;

import java.sql.Timestamp;
import java.text.SimpleDateFormat;


public enum   HighPrecisionSixBitTimestamp
{
    INSTANCE ;

    private long              startTimeMillis ;
    private long              startNanoTime ;
    private SimpleDateFormat dateFormat ;

    private HighPrecisionSixBitTimestamp()
    {  this.startTimeMillis = System.currentTimeMillis() ;
        this.startNanoTime = System.nanoTime() ;
        this.dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss.SSS") ;
    }

    public String get()
    {  long microSeconds = (System.nanoTime() - this.startNanoTime) / 1000 ;
        long date = this.startTimeMillis + (microSeconds/1000) ;
        return this.dateFormat.format(date) + String.format("%03d", microSeconds % 1000) ;
    }

    public static void main(String[] args) {
        String timestampstr= HighPrecisionSixBitTimestamp.INSTANCE.get();
        System.out.println(timestampstr); //2022-10-22 22:51:29.429827
        System.out.println(Timestamp.valueOf(timestampstr)); //2022-10-22 22:54:42.669026

    }
}