实例 Java 日期格式 yyyy-MM-dd

import java.time.LocalDateTime;  // Import the LocalDateTime class

import java.time.format.DateTimeFormatter;  // Import the DateTimeFormatter class

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public class Main {

  public static void main(String[] args) {  

    LocalDateTime myDateObj = LocalDateTime.now();  

    System.out.println("Before formatting: " + myDateObj);  

    DateTimeFormatter myFormatObj = DateTimeFormatter.ofPattern("dd-MM-yyyy HH:mm:ss");  

    String formattedDate = myDateObj.format(myFormatObj);  

    System.out.println("After formatting: " + formattedDate);  

  }  

}  

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