Java程式顯示目前日期和時間

在本文中，我們將了解如何顯示目前日期和時間。 Java沒有內建的Date類，但是我們可以匯入java.time套件來使用日期和時間API。該包包含許多日期和時間類別。

下面是相同的示範-

假設我們的輸入是 -

Run the program

期望的輸出是 -

The current date and time is: 2022/03/17 23:43:17

演算法

Step 1 - START
Step 2 - Declare an object of LocalDateTime namely date.
Step 3 - Define the values.
Step 4 - Define a date time format using DateTimeFormatter objects
Step 5 - Display the date and time using a specific formats
Step 6 - Stop

範例1

這裡，我們將所有操作綁定到「main」函數下。

import java.time.format.DateTimeFormatter;
import java.time.LocalDateTime;
public class Demo {
   public static void main(String[] args) {
      System.out.println("The required packages have been imported");
      System.out.println("A LocalDateTime object has been defined");
      DateTimeFormatter date_time = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
      LocalDateTime now = LocalDateTime.now();
      System.out.println("\nThe current date and time is: " +date_time.format(now));
   }
}

輸出

The required packages have been imported
A LocalDateTime object has been defined

The current date and time is: 2022/03/17 23:43:17

範例 2

在這裡，我們將操作封裝到展示物件導向程式設計的函數中。

import java.time.format.DateTimeFormatter;
import java.time.LocalDateTime;
public class Demo {
   static void Date_time(DateTimeFormatter date_time){
      LocalDateTime now = LocalDateTime.now();
      System.out.println("\nThe current date and time is: " +date_time.format(now));
   }
   public static void main(String[] args) {
      System.out.println("The required packages have been imported");
      System.out.println("A LocalDateTime object has been defined");
      DateTimeFormatter date_time = DateTimeFormatter.ofPattern("yyyy/MM/dd HH:mm:ss");
      Date_time(date_time);
   }
}

輸出

The required packages have been imported
A LocalDateTime object has been defined

The current date and time is: 2022/03/29 08:55:28

以上是Java程式顯示目前日期和時間的詳細內容。更多資訊請關注PHP中文網其他相關文章！