可以加入GTM時間，代碼如下：

public class ShowCurrentTime {

public static void main(String args[]){

//Obtain the total milliseconds since midnight,Jan 1,1970

long totalMilliseconds=System.currentTimeMillis();

//Obtain the total seconds since in midnight,Jan 1, 1970

long totalSeconds=totalMilliseconds/1000;

//compute the current second in the minute in the hour

long currentSecond=totalSeconds%60;

//Obtain the total minutes

long totalMinutes=totalSeconds/60;

//compute the current minute in the hour

long currentMinute=totalMinutes%60;

//Obtain the total hours

long totalHours=totalMinutes/60;

//compute the current hour

long currentHour=totalHours%24;

//display results

System.out.println("Current time is "+currentHour+" : "+currentMinute+" : "+currentSecond+" GMT");

}

}

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