*2.8（當(dāng)前時(shí)間）程序清單2-7給出了顯示當(dāng)前格林尼治時(shí)間的程序。修改這個(gè)程序，提示用戶輸入相對(duì)于GMT的時(shí)區(qū)偏移量，顯示在這個(gè)特定時(shí)區(qū)的時(shí)間

• 題目
• • 題目描述
  • 運(yùn)行示例
  • 程序清單2-7（非本題代碼）+思路（注釋）
• 代碼塊

題目

題目描述

*2.8（當(dāng)前時(shí)間）程序清單2-7給出了顯示當(dāng)前格林尼治時(shí)間的程序。修改這個(gè)程序，提示用戶輸入相對(duì)于GMT的時(shí)區(qū)偏移量，顯示在這個(gè)特定時(shí)區(qū)的時(shí)間

運(yùn)行示例

Enter the time zone offset to GMT: -5
The current time is 4:50:34

程序清單2-7（非本題代碼）+思路（注釋）

public class ShowCurrentTime {public static void main(String[] args) {// 2.8可以在這里獲取時(shí)區(qū)// Obtain the total milliseconds since midnight, Jan 1, 1970long totalMilliseconds = System.currentTimeMillis();// Obtain the total seconds since midnight, Jan 1, 1970long totalSeconds = totalMilliseconds / 1000;//2.8可以在這里將求出的秒數(shù)+時(shí)區(qū)和GMT時(shí)區(qū)的偏移（秒數(shù)）// Compute the current second in the minute in the hourlong currentSecond = totalSeconds % 60;// Obtain the total minuteslong totalMinutes = totalSeconds / 60;// Compute the current minute in the hourlong currentMinute = totalMinutes % 60;// Obtain the total hourslong totalHours = totalMinutes / 60;// Compute the current hourlong currentHour = totalHours % 24;// Display resultsSystem.out.println("Current time is " + currentHour + ":"+ currentMinute + ":" + currentSecond + " GMT");} }

代碼塊

import java.util.Scanner;public class Test2_8 {public static void main(String[] args) {Scanner input = new Scanner(System.in);System.out.println("Enter the time zone offset to GMT:");int offset = input.nextInt();// Obtain the total milliseconds since midnight, Jan 1, 1970long totalMilliseconds = System.currentTimeMillis();// Obtain the total seconds since midnight, Jan 1, 1970long totalSeconds = totalMilliseconds / 1000;totalSeconds += offset * 60 * 60;// Compute the current second in the minute in the hourlong currentSecond = totalSeconds % 60;// Obtain the total minuteslong totalMinutes = totalSeconds / 60;// Compute the current minute in the hourlong currentMinute = totalMinutes % 60;// Obtain the total hourslong totalHours = totalMinutes / 60;// Compute the current hourlong currentHour = totalHours % 24;// Display resultsSystem.out.println("Current time is " + currentHour + ":"+ currentMinute + ":" + currentSecond + " GMT");} }

總結(jié)

以上是生活随笔為你收集整理的Java黑皮书课后题第2章：*2.8（当前时间）程序清单2-7给出了显示当前格林尼治时间的程序。修改这个程序，提示用户输入相对于GMT的时区偏移量，显示在这个特定时区的时间的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。