Java语言程序设计 第二章（2.8）

2.8    （当前时间）写出显示当前格林威治时间的程序。提示用户输入相对于GMT的时区偏移量，然后显示在这个特定时区的时间。import java.util.Scanner;

public class ShowCurrentTime
{
public static void main(String[] args)
{
Scanner inPut = new Scanner(System.in);
//compute the GMT

long totalMilliSeconds = System.currentTimeMillis();
//compute the total seconds
long totalSeconds = totalMilliSeconds/1000;
//compute the current second
long currentSecond = totalSeconds%60;
//compute the total minutes
long totalMinutes = totalSeconds/60;
//compute the current minute
long currentMinute = totalMinutes%60;
//compute the hours
long totalHours = totalMinutes/60;
//compute the current hour
long currentHour = totalHours%24;

//conversion time zone
int timeZone = inPut.nextInt();
long currentTimeZoneHour = currentHour+timeZone;

//display result
System.out.println("The current time is "+currentTimeZoneHour+":"+currentMinute+":"+currentSecond);

}
}