[問題] JAVA時間顯示錯誤

[RicciYeh (RicciYeh)]

教科書的內容是 顯現現在的時間 可是我照著打 為什麼時間會出錯?

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 midnight, jan 1, 1970
                long totalSeconds = totalMilliseconds / 1000;

                // Compute the current second in the minute in the hour
                long currentSecond = totalSeconds % 60;

                // Obtain the titak minutes
                long totalMinutes = totalSeconds / 60;

                // Compute the current minute in the hour
                long currentMinute = totalMinutes % 60;

                // Obtain tje total hours
                long totalHours = totalMinutes / 60;

                // Compute the current Hour
                long currentHour = totalHours % 24;

                // 這行是我自己上網找的 確定一下我的時間
                System.out.print("Current time is "+new java.util.Date( System.currentTimeMillis() )+"\n");
                // Display results
                System.out.println("Current time is " + currentHour + ":"         + currentMinute + ":" + currentSecond + " GMT");
        }
}

輸出:
Current time is Sat Mar 02 21:55:39 CST 2019
Current time is 13:55:39 GMT

想請問各位大神這個是哪裡出錯?

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推 ray2501: Time zone
推 LPH66: 起點時間的 1970/1/1 半夜是 UTC+0 時間
→ LPH66: 也就是這個 0 是 UTC+0 的午夜
→ RicciYeh: 謝謝回覆
→ MOONRAKER: 是不知道有時區是嗎
→ MOONRAKER: 連時區名稱都顯示給你看